In HL Business Management Decision Trees, how do you calculate Expected Monetary Value (EMV) and Net Expected Value at Chance Nodes vs Decision Nodes?

Square nodes = Decision nodes (controlled by management); Circular nodes = Chance/Probability nodes (probabilities on branches must sum to 1.0). Calculate from RIGHT to LEFT: 1) At each circular Chance node, calculate Expected Value = Σ(Probability × Outcome payoff); 2) Subtract the initial capital cost of that option along the decision branch to get Net Expected Value; 3) At the square Decision node, choose the branch with the highest Net Expected Value and cross out (reject) the inferior branches with double parallel lines (//).

In IB Macroeconomics, state the formulas for Nominal vs Real GDP (using the GDP Deflator), Real GDP per capita at PPP, and the Keynesian Multiplier (HL).

Nominal GDP is measured at current market prices via the Output, Income (W+R+I+P), or Expenditure (C + I + G + (X − M)) approaches. Real GDP = (Nominal GDP ÷ GDP Deflator) × 100. Purchasing Power Parity (PPP) adjusts GNI/GDP per capita for differences in local price levels (cost of an identical basket of goods) across countries. HL Keynesian Multiplier: k = 1 / (1 − MPC) = 1 / (MPS + MPT + MPM), where Final ΔReal GDP = k × Initial ΔInjection (ΔI, ΔG, or ΔX).

Contrast Floating, Fixed, and Managed Float Exchange Rate systems, and explain how the Balance of Payments always balances to zero (Current Account = −(Capital + Financial Account)).

Floating exchange rate: determined purely by market demand and supply of the currency (driven by trade flows, FDI, relative interest rates/hot money, inflation, speculation). Fixed exchange rate: pegged by the central bank buying/selling foreign exchange reserves and adjusting interest rates (upward change = revaluation, downward = devaluation). In the Balance of Payments, any Current Account deficit (exports < imports + net income/transfers) must be financed by a corresponding Capital + Financial Account surplus (borrowing from abroad, FDI inflows, or selling official reserve assets).

Explain the Ansoff Matrix (4 growth strategies) and STEEPLE / SWOT analysis in IB Business Management Strategic Planning.

Ansoff Matrix maps Products (Existing vs New) against Markets (Existing vs New) to assess strategic risk: 1) Market Penetration (Existing product + Existing market: lowest risk, price promos/loyalty); 2) Product Development (New product + Existing market: R&D, brand extension); 3) Market Development (Existing product + New geographic/demographic market: overseas expansion); 4) Diversification (New product + New market: highest risk, related vs unrelated conglomerate diversification). STEEPLE analyses external macro-environmental threats/opportunities: Social, Technological, Economic, Environmental, Political, Legal, and Ethical.

Compare the four types of Market Failure in IB Microeconomics: Negative/Positive Externalities, Common Pool Resources, Public Goods, and Asymmetric Information / Monopoly Power.

1) Negative Externalities of Production (MSC > MPC) or Consumption (MSB Q_opt). 2) Positive Externalities of Production (MSC MPB, merit goods): under-allocation (Q_m < Q_opt). 3) Common Pool Resources (rivalrous but non-excludable, e.g., ocean fish stocks, atmosphere, pasture): leads to the 'Tragedy of the Commons' (over-exploitation and depletion, Unsustainability). 4) Pure Public Goods (non-rivalrous and non-excludable): free-rider problem causes missing market. 5) Asymmetric Information (adverse selection & moral hazard) and Abuse of Monopoly Power (restricting output where MR = MC so P > MC).

In IB Business Management Break-Even Analysis, state the formulas for Contribution per Unit, Break-Even Quantity (BEQ), Margin of Safety (MOS), and Target Profit Output.

Unit Contribution = Selling Price per unit (P) − Variable Cost per unit (AVC). Total Contribution = Unit Contribution × Quantity (Q) (goes towards paying off Fixed Costs first, then becomes Profit). Break-Even Quantity (where Total Revenue = Total Costs): BEQ = Fixed Costs ÷ (P − AVC). Margin of Safety: MOS = Actual (or budgeted) Output − Break-Even Output. Output required to achieve Target Profit π: Q_target = (Fixed Costs + Target Profit) ÷ Unit Contribution.

Why does the Price Elasticity of Demand (PED) vary along a straight-line downward-sloping demand curve, and how does it relate to Total Revenue (TR) and Marginal Revenue (MR)?

Because PED = (ΔQ / ΔP) × (P / Q), even though the slope (ΔQ / ΔP) is constant along a linear demand curve, the ratio (P / Q) changes continuously: 1) Upper half of demand curve (high P, low Q): |PED| > 1 (elastic; MR > 0, so lowering price increases Total Revenue); 2) Exact midpoint: |PED| = 1 (unitary elastic; MR = 0, Total Revenue is at its MAXIMUM); 3) Lower half (low P, high Q): |PED| < 1 (inelastic; MR < 0, so raising price increases Total Revenue). For primary commodities, PED and PES are both inelastic (< 1), causing severe price volatility.

Distinguish between the four types of Unemployment (Cyclical, Structural, Frictional, Seasonal) and evaluate why a low CPI Inflation rate is targeted over Deflation.

Unemployment Rate = (Number of unemployed actively seeking work ÷ Total Labour Force) × 100%. Natural Rate of Unemployment (NRU) = Structural (skills/geographical/technological mismatch + labour market rigidities) + Frictional + Seasonal. Cyclical (demand-deficient) unemployment occurs during recessions when AD falls. Deflation (falling general price level) is dangerous because: 1) Consumers defer spending expecting lower future prices (deflationary spiral); 2) Real value of debt rises, increasing bankruptcies; 3) Nominal interest rates hit the zero lower bound.

Arrange the 6 stages of Economic Integration in order of increasing integration, and distinguish Trade Creation from Trade Diversion in a Customs Union (HL).

1) Preferential Trade Area (PTA); 2) Free Trade Area (FTA, e.g., USMCA—removes internal tariffs but members keep independent external tariffs); 3) Customs Union (removes internal tariffs AND adopts a Common External Tariff); 4) Common Market (adds free movement of labour and capital); 5) Economic and Monetary Union (e.g., Eurozone—shared single currency and central bank, losing independent monetary/exchange rate policy); 6) Complete Economic Integration. Trade Creation: production shifts from a high-cost domestic producer to a lower-cost member partner after joining a customs union (welfare gain). Trade Diversion: production shifts from a low-cost non-member outsider (now facing the Common External Tariff) to a higher-cost member partner (welfare loss).

In HL Economics Asymmetric Information, distinguish between Adverse Selection and Moral Hazard with insurance/banking examples.

Asymmetric information occurs when one party to an economic transaction possesses more or better information than the other: 1) Adverse Selection occurs BEFORE a contract is signed (hidden information)—e.g., in private health insurance, high-risk individuals hide pre-existing conditions and are most likely to buy insurance, driving up premiums and pricing out healthy low-risk buyers (or Akerlof's 'Market for Lemons' in used cars); solved by screening and signalling (warranties). 2) Moral Hazard occurs AFTER a contract is signed (hidden action)—e.g., an insured driver taking greater risks or an investment bank making risky loans knowing taxpayers will bail it out; solved by deductibles/co-payments and regulation.

In IB Economics Paper 2 (15-mark International/Development Essay), how do you integrate the 5 Real-World Examples (RWEs) and Evaluation criteria?

Unlike Paper 1 (which requires real-world examples from your own study), Paper 2 provides data/text extracts. To hit Level 5 (13–15 marks): 1) Define core terms; 2) Draw 1–2 relevant, fully labelled diagrams (e.g., tariff diagram, exchange rate diagram, poverty cycle, or AD/AS + LRAS); 3) Quote specific data/statistics from at least two different extracts (Texts A, B, C, or Table) to anchor your analysis; 4) Evaluate using CLASPP (Conclusions, Long-term vs Short-term, Assumptions/ceteris paribus, Stakeholders winners/losers, Priorities, Pros & Cons).

In HL Business Management Operations, how do you construct a Critical Path Analysis (CPA / Network Diagram) and calculate Free Float vs Total Float?

At each node on a network diagram: Top-right = Earliest Start Time (EST, calculated in a forward pass from left to right; if two activities merge into a node, pick the HIGHEST EST); Bottom-right = Latest Finish Time (LFT, calculated in a backward pass from right to left; if two paths branch backwards from a node, pick the LOWEST LFT). The Critical Path is the longest path through the network where EST = LFT at every node and float = 0. Total Float = LFT − Duration − EST (maximum delay without delaying the whole project). Free Float = EST(next activity) − Duration − EST(current activity) (delay without delaying the very next activity).

In IB International Economics (HL), draw/calculate the effects of a Tariff vs an Import Quota vs a Production Subsidy on domestic price, imports, tax revenue, and welfare loss.

At free-trade world price P_w: domestic supply is Q₁, domestic demand is Q₄, and imports are (Q₄ − Q₁). 1) Tariff (P_w + t): domestic output rises to Q₂, consumption falls to Q₃, imports shrink to (Q₃ − Q₂); government collects tariff revenue c = t × (Q₃ − Q₂), and two deadweight welfare loss triangles form (production inefficiency + consumption loss). 2) Quota of (Q₃ − Q₂): same price rise and two welfare loss triangles, plus quota rent goes to foreign exporters/licence holders. 3) Production Subsidy of $s per unit: domestic price stays at P_w (no consumer loss!), domestic supply shifts right so output rises to Q₂, imports shrink to (Q₄ − Q₂), and there is only ONE deadweight welfare loss triangle (production inefficiency).

Compare the Monetarist / New Classical (SRAS/LRAS) model and the Keynesian (three-section AS) model of Aggregate Supply.

Monetarist / New Classical model: SRAS slopes upwards, while LRAS is vertical at full employment output Y_p (Natural Rate of Unemployment); an inflationary gap (Y > Y_p) or recessionary gap (Y < Y_p) self-corrects in the long run via flexible wages shifting SRAS until output returns to Y_p (so demand-side policies only cause inflation in LR). Keynesian AS curve has 3 sections: 1) Horizontal (deep recession, spare capacity—AD increases output with zero inflation); 2) Upward-sloping (approaching capacity, resource bottlenecks); 3) Vertical at Y_max. Keynesians argue wages are 'sticky downwards', so an economy can remain stuck in a deflationary gap indefinitely without fiscal stimulus.

State the Nine Central Concepts of the IB Economics syllabus and how they frame Paper 1 & Paper 2 evaluation.

The 9 overarching IB Economics concepts are: 1) Scarcity; 2) Choice; 3) Efficiency (allocative vs productive); 4) Equity (normative fairness in distribution, distinct from equality); 5) Economic Well-being (multidimensional quality of life); 6) Sustainability (meeting present needs without compromising future generations' resource base); 7) Change; 8) Interdependence; 9) Intervention (government vs market allocation).

In HL Microeconomics, explain Game Theory (Payoff Matrix, Dominant Strategy, Nash Equilibrium) in a Duopoly / Oligopoly Prisoners' Dilemma.

In a non-collusive oligopoly payoff matrix (e.g., Firm A and Firm B choosing 'High Price' vs 'Low Price'): a Dominant Strategy is a choice that yields a higher payoff for a firm regardless of what the rival does. When both firms pursue their individual dominant strategy to undercut ('Low Price, Low Price'), they end up in a Nash Equilibrium (where neither firm can improve its payoff by unilaterally changing strategy) that leaves BOTH firms with lower profits than if they had colluded on 'High Price, High Price'. This explains the incentive to form a cartel (e.g., OPEC) as well as the constant temptation to cheat on the cartel.

In HL Microeconomics (Theory of the Firm), compare the Revenue, Cost, and Profit conditions of Perfect Competition, Monopolistic Competition, Oligopoly, and Monopoly.

Economic Profit = Total Revenue − Total Economic Cost (Explicit + Implicit opportunity costs); thus Normal Profit occurs when Economic Profit = 0 (AR = AC at the MC = MR output). Perfect Competition: price taker (horizontal D = AR = MR = P), earns abnormal profit or loss in SR, but zero barriers to entry drive long-run equilibrium to P = MR = MC = minimum AC (both allocatively and productively efficient). Monopoly / Collusive Oligopoly: high barriers to entry allow abnormal profit (AR > AC at MC = MR) to persist in the long run, with P > MC (allocative inefficiency) and output below minimum AC.

In IB Business Management Unit 3 (Finance & Accounts), state the Profitability and Efficiency Ratios (GPM, NPM, ROCE, Inventory Turnover, Debtor Days, Creditor Days, Gearing).

Profitability: 1) Gross Profit Margin (GPM) = (Gross Profit ÷ Sales Revenue) × 100%; 2) Profit Margin (NPM) = (Net Profit before interest & tax ÷ Sales Revenue) × 100%; 3) Return on Capital Employed (ROCE) = (Net Profit before interest & tax ÷ Capital Employed) × 100%, where Capital Employed = Non-current liabilities + Total Equity (measures return per $1 invested; benchmark > bank interest rate). Liquidity: Current Ratio = Current Assets ÷ Current Liabilities (benchmark 1.5–2.0 : 1); Acid Test (Quick) Ratio = (Current Assets − Stock) ÷ Current Liabilities (benchmark ≥ 1.0 : 1). HL Efficiency: Gearing Ratio = (Non-current Liabilities ÷ Capital Employed) × 100% (>50% is highly geared/risky); Debtor Days = (Debtors ÷ Sales Revenue) × 365; Creditor Days = (Creditors ÷ Cost of Sales) × 365.

Explain Hofstede's Six Cultural Dimensions for International Marketing and Global HRM in HL Business Management.

Geert Hofstede's cultural dimensions explain cross-border management and marketing differences: 1) Power Distance (acceptance of hierarchical authority vs flat egalitarian empowerment); 2) Individualism vs Collectivism; 3) Masculinity vs Femininity (assertive competitiveness/material success vs cooperation/quality of life); 4) Uncertainty Avoidance (tolerance for ambiguity/risk vs strict rules); 5) Long-Term vs Short-Term Orientation (perseverance/thrift vs quick quarterly results/tradition); 6) Indulgence vs Restraint.

How do you calculate Payback Period, Average Rate of Return (ARR), and Net Present Value (NPV) in IB Business Investment Appraisal?

1) Payback Period: time taken for cumulative net cash inflows to recover the initial capital cost (Years + [Remaining cost needed ÷ Net cash flow in next year] × 12 months)—favours liquidity/short-term certainty but ignores cash flows after payback. 2) ARR = [(Total Net Cash Inflows − Initial Capital Cost) ÷ Lifespan in years] ÷ Initial Capital Cost × 100% (compare against target criterion rate and inflation/interest rate). 3) NPV (HL): multiply each year's net cash flow by its Discount Factor (1 / (1 + r)^t) to account for the time value of money, sum all Present Values, and subtract Initial Cost (accept project if NPV > 0).

In IB Business Management Unit 4 (Marketing), compare the 7Ps Marketing Mix for goods vs services and contrast Quota, Random, Stratified, and Cluster Sampling.

The traditional 4Ps for physical goods are Product, Price (cost-plus, penetration, skimming, predatory, psychological, dynamic), Promotion (Above-the-Line mass media vs Below-the-Line targeted/Through-the-Line digital), and Place (distribution channels). Services add 3 extra Ps (the 7Ps): People (customer-facing staff training/appearance), Processes (waiting times, payment/delivery smoothness), and Physical Evidence (store ambience, cleanliness, tangible touchpoints). Sampling: Random (equal chance, no bias), Stratified (proportional random sample from subgroups), Quota (non-random convenient selection matching subgroup quotas), Snowball (referrals).

In HL Business Management Budgets & Variance Analysis, how do you identify whether a Sales, Cost, or Profit Variance is Favourable (F) or Adverse (A)?

Variance = Actual Figure − Budgeted Figure (in magnitude), classified by its impact on Net Profit: 1) Favourable Variance (F): increases net profit compared to budget—occurs when Actual Revenue > Budgeted Revenue OR when Actual Costs Budgeted Costs.

In IB Business Management (Unit 1), compare Sole Traders, Partnerships, Privately Held Companies (Ltd), Publicly Held Companies (PLC), Social Enterprises, and Cooperatives.

Sole Traders and Partnerships are unincorporated with UNLIMITED liability (owners are personally liable for business debts). Privately Held (Ltd) and Publicly Held (PLC) Companies are incorporated separate legal entities providing LIMITED liability to shareholders (Ltd restricts share sales to invited investors; PLC floats shares on a stock exchange via an IPO). For-profit Social Enterprises (e.g., microfinance, cooperatives) pursue the Triple Bottom Line (Elkington: People, Planet, Profit—social, environmental, and financial sustainability), whereas Non-profit NGOs reinvest 100% of surplus into social missions.

Explain the Boston Consulting Group (BCG) Matrix and how it links to the Product Life Cycle and Cash Flow in IB Business Management.

The BCG Matrix classifies a firm's product portfolio by Market Growth Rate (high vs low) and Relative Market Share (high vs low): 1) Stars (High growth, High share): generate high revenue but require heavy investment to defend growth; 2) Cash Cows (Low growth, High share: Mature stage): generate large positive net cash flows with low investment needs, used to fund Question Marks/R&D (milk strategy); 3) Question Marks / Problem Children (High growth, Low share: Launch stage): consume heavy cash; need holding/building into Stars or divesting; 4) Dogs (Low growth, Low share: Decline stage): harvest or divest.

In IB Economics Circular Economy & Sustainability, distinguish between Weak Sustainability and Strong Sustainability, and evaluate Carbon Taxes vs Cap-and-Trade Schemes.

Weak sustainability assumes manufactured human-made capital can substitute for depleted natural capital; Strong sustainability (Doughnut Economics / Kate Raworth) argues critical natural capital (climate stability, biodiversity) is non-substitutable and economic activity must stay between a social foundation and an ecological ceiling. Carbon Tax vs Cap-and-Trade (Tradable Permits): Carbon tax fixes the PRICE of carbon emissions (providing price certainty for green R&D investment, though the exact quantity of emission reductions is uncertain because PED is inelastic); Cap-and-Trade fixes the maximum QUANTITY of emissions (supply curve is vertical at the cap, guaranteeing environmental targets are met, though permit prices fluctuate with the business cycle).

Explain Force Field Analysis (Kurt Lewin) and Kotter & Schlesinger's 6 Strategies for Overcoming Resistance to Change in HL Business Management.

Lewin's Force Field Analysis weighs Driving Forces (pushing for strategic change, scored 1–5) against Restraining Forces (pushing against change, scored 1–5); management must strengthen driving forces and weaken restraining forces (Unfreeze → Change → Refreeze). Kotter & Schlesinger's 4 reasons for resistance to change are Self-interest, Misunderstanding/lack of trust, Low tolerance for change/fear of the unknown, and Different assessments of the situation; their 6 strategies are: 1) Education & communication; 2) Participation & involvement; 3) Facilitation & support; 4) Negotiation & agreement; 5) Manipulation & co-optation; 6) Explicit/implicit coercion.

In IB Economics Taxation & Inequality, how do you calculate Average Tax Rate (ATR) vs Marginal Tax Rate (MTR) and interpret a Lorenz Curve / Gini Coefficient?

Marginal Tax Rate (MTR) = (ΔTax Paid ÷ ΔIncome) × 100%; Average Tax Rate (ATR) = (Total Tax Paid ÷ Total Income) × 100%. Under a progressive income tax system (with tax-free brackets and rising marginal rates), MTR > ATR and ATR rises with income, redistributing income to shift the Lorenz Curve closer to the 45° line of absolute equality and lower the Gini Coefficient. Indirect taxes (like VAT/GST) are regressive because lower-income households spend a higher proportion of their total income on taxed goods.

In IB Business Management Unit 2 (Human Resource Management), compare Taylor, Maslow, Herzberg (Two-Factor Theory), McClelland, Deci & Ryan, and Adams' Equity Theory.

1) Taylor (Scientific Management): workers motivated solely by money (differentiated piece-rate pay, division of labour). 2) Maslow's Hierarchy: Physiological → Safety → Social → Esteem → Self-Actualisation. 3) Herzberg's Two-Factor Theory: Hygiene factors (pay, working conditions, company policy—prevent dissatisfaction but do NOT motivate) vs Motivators (achievement, recognition, responsibility, growth—create job satisfaction via job enrichment/empowerment). 4) McClelland's Acquired Needs: Need for Achievement (n-Ach), Power (n-Pow), and Affiliation (n-Aff). 5) Deci & Ryan Self-Determination Theory: Autonomy, Competence, Relatedness. 6) Adams' Equity Theory: workers compare their ratio of Inputs (effort/skill) to Outputs (pay/recognition) against peers.

What is the exact structure required for the 10-Mark Evaluation Question on the IB Business Management Paper 1/2/3 Case Study?

To score 9–10 marks: 1) Define key business terms and address the command term ('Discuss', 'Evaluate', 'Recommend'); 2) Apply at least two business management tools/theories quantitatively and qualitatively (using financial figures/tables from the stimulus); 3) Present balanced arguments FOR and AGAINST the strategic option from multiple stakeholder perspectives (shareholders, employees, customers, local community); 4) Conclude with a substantiated final recommendation weighing Short-Run vs Long-Run impacts and pointing out missing information in the stimulus.

In IB Business Management Unit 5 (Operations Management), compare Job, Batch, Mass/Flow, and Mass Customisation production, and Lean Production (JIT, Kaizen, Kanban, Cradle-to-Cradle).

1) Job production: customized one-off items (high unit cost, skilled craft labour, high margin); 2) Batch production: identical groups produced before retooling (economies of scale + variety, work-in-progress stocks); 3) Mass/Flow production: continuous automated assembly line of standardised goods (lowest unit cost, high capital set-up, monotonous). Lean Production (eliminating waste / muda): Kaizen (continuous incremental improvement by all workers), Just-in-Time (JIT, zero buffer stock vs Just-in-Case JIC), Kanban (pull-based stock replenishment cards), Total Quality Management (TQM, zero defects), and Cradle-to-Cradle (C2C circular design vs linear Cradle-to-Grave).

In IB Business Management Finance, distinguish between a Profit and Loss Account (Income Statement) and a Balance Sheet (Statement of Financial Position), and explain Depreciation (HL).

Income Statement (flows over a 12-month period): Sales Revenue − Cost of Sales (Opening stock + Purchases − Closing stock) = Gross Profit; Gross Profit − Expenses = Net Profit before Interest & Tax → Interest → Tax → Dividends + Retained Profit. Balance Sheet (snapshot at a single date): Total Assets (Non-current + Current) − Total Liabilities (Current + Non-current) = Net Assets = Total Equity (Share Capital + Retained Earnings). HL Depreciation of non-current assets: 1) Straight-Line Method = (Original Cost − Residual Value) ÷ Useful Life (constant annual expense); 2) Units of Production Method = [(Cost − Residual) ÷ Total lifetime output units] × Units produced this year.

In IB Economics Paper 3 (HL Quantitative), how do you calculate linear Demand and Supply functions (Qd = a − bP and Qs = c + dP) and the effects of a specific indirect tax?

In Qd = a − bP: 'a' is the Q-intercept (quantity demanded at P = 0) and '−b' is ΔQd / ΔP (note: gradient on a standard economics graph with P on vertical axis is −1/b). Set Qd = Qs to solve for equilibrium P* and Q*. When a specific tax of $t per unit is imposed on producers, the new supply function replaces P with (P − t): Qs_tax = c + d(P − t). Set Qd = Qs_tax to find the new consumer price P_c, producer price P_p = P_c − t, new quantity Q_tax, government tax revenue = t × Q_tax, and deadweight welfare loss = ½ × t × (Q* − Q_tax).

IB Economics & Business Management HL/SL: Elasticities, Market Failure, Macroeconomics, International Trade & Financial Ratios

IBDP Economics (SL & HL Paper 1/2/3) and Business Management (SL & HL) mastery: PED/PES/YED calculations, Pigouvian tax/subsidy welfare triangles, HL Theory of the Firm, Keynesian/Monetarist Macro, Exchange Rates, Ansoff/BCG Matrices, and Financial Ratio Analysis.

Level: advanced
Languages: en → en
Cards: 32
Markdown: IB Economics & Business Management HL/SL: Elasticities, Market Failure, Macroeconomics, International Trade & Financial Ratios (.md)

Flashcards (32)

#	Front (Term / Question)	Back (Definition / Answer)
1	In HL Business Management Decision Trees, how do you calculate Expected Monetary Value (EMV) and Net Expected Value at Chance Nodes vs Decision Nodes?	Square nodes = Decision nodes (controlled by management); Circular nodes = Chance/Probability nodes (probabilities on branches must sum to 1.0). Calculate from RIGHT to LEFT: 1) At each circular Chance node, calculate Expected Value = Σ(Probability × Outcome payoff); 2) Subtract the initial capital cost of that option along the decision branch to get Net Expected Value; 3) At the square Decision node, choose the branch with the highest Net Expected Value and cross out (reject) the inferior branches with double parallel lines (//).
2	In IB Macroeconomics, state the formulas for Nominal vs Real GDP (using the GDP Deflator), Real GDP per capita at PPP, and the Keynesian Multiplier (HL).	Nominal GDP is measured at current market prices via the Output, Income (W+R+I+P), or Expenditure (C + I + G + (X − M)) approaches. Real GDP = (Nominal GDP ÷ GDP Deflator) × 100. Purchasing Power Parity (PPP) adjusts GNI/GDP per capita for differences in local price levels (cost of an identical basket of goods) across countries. HL Keynesian Multiplier: k = 1 / (1 − MPC) = 1 / (MPS + MPT + MPM), where Final ΔReal GDP = k × Initial ΔInjection (ΔI, ΔG, or ΔX).
3	Contrast Floating, Fixed, and Managed Float Exchange Rate systems, and explain how the Balance of Payments always balances to zero (Current Account = −(Capital + Financial Account)).	Floating exchange rate: determined purely by market demand and supply of the currency (driven by trade flows, FDI, relative interest rates/hot money, inflation, speculation). Fixed exchange rate: pegged by the central bank buying/selling foreign exchange reserves and adjusting interest rates (upward change = revaluation, downward = devaluation). In the Balance of Payments, any Current Account deficit (exports < imports + net income/transfers) must be financed by a corresponding Capital + Financial Account surplus (borrowing from abroad, FDI inflows, or selling official reserve assets).
4	Explain the Ansoff Matrix (4 growth strategies) and STEEPLE / SWOT analysis in IB Business Management Strategic Planning.	Ansoff Matrix maps Products (Existing vs New) against Markets (Existing vs New) to assess strategic risk: 1) Market Penetration (Existing product + Existing market: lowest risk, price promos/loyalty); 2) Product Development (New product + Existing market: R&D, brand extension); 3) Market Development (Existing product + New geographic/demographic market: overseas expansion); 4) Diversification (New product + New market: highest risk, related vs unrelated conglomerate diversification). STEEPLE analyses external macro-environmental threats/opportunities: Social, Technological, Economic, Environmental, Political, Legal, and Ethical.
5	Compare the four types of Market Failure in IB Microeconomics: Negative/Positive Externalities, Common Pool Resources, Public Goods, and Asymmetric Information / Monopoly Power.	1) Negative Externalities of Production (MSC > MPC) or Consumption (MSB < MPB): over-allocation of resources (Q_m > Q_opt). 2) Positive Externalities of Production (MSC < MPC) or Consumption (MSB > MPB, merit goods): under-allocation (Q_m < Q_opt). 3) Common Pool Resources (rivalrous but non-excludable, e.g., ocean fish stocks, atmosphere, pasture): leads to the 'Tragedy of the Commons' (over-exploitation and depletion, Unsustainability). 4) Pure Public Goods (non-rivalrous and non-excludable): free-rider problem causes missing market. 5) Asymmetric Information (adverse selection & moral hazard) and Abuse of Monopoly Power (restricting output where MR = MC so P > MC).
6	In IB Business Management Break-Even Analysis, state the formulas for Contribution per Unit, Break-Even Quantity (BEQ), Margin of Safety (MOS), and Target Profit Output.	Unit Contribution = Selling Price per unit (P) − Variable Cost per unit (AVC). Total Contribution = Unit Contribution × Quantity (Q) (goes towards paying off Fixed Costs first, then becomes Profit). Break-Even Quantity (where Total Revenue = Total Costs): BEQ = Fixed Costs ÷ (P − AVC). Margin of Safety: MOS = Actual (or budgeted) Output − Break-Even Output. Output required to achieve Target Profit π: Q_target = (Fixed Costs + Target Profit) ÷ Unit Contribution.
7	Why does the Price Elasticity of Demand (PED) vary along a straight-line downward-sloping demand curve, and how does it relate to Total Revenue (TR) and Marginal Revenue (MR)?	Because PED = (ΔQ / ΔP) × (P / Q), even though the slope (ΔQ / ΔP) is constant along a linear demand curve, the ratio (P / Q) changes continuously: 1) Upper half of demand curve (high P, low Q): \|PED\| > 1 (elastic; MR > 0, so lowering price increases Total Revenue); 2) Exact midpoint: \|PED\| = 1 (unitary elastic; MR = 0, Total Revenue is at its MAXIMUM); 3) Lower half (low P, high Q): \|PED\| < 1 (inelastic; MR < 0, so raising price increases Total Revenue). For primary commodities, PED and PES are both inelastic (< 1), causing severe price volatility.
8	Distinguish between the four types of Unemployment (Cyclical, Structural, Frictional, Seasonal) and evaluate why a low CPI Inflation rate is targeted over Deflation.	Unemployment Rate = (Number of unemployed actively seeking work ÷ Total Labour Force) × 100%. Natural Rate of Unemployment (NRU) = Structural (skills/geographical/technological mismatch + labour market rigidities) + Frictional + Seasonal. Cyclical (demand-deficient) unemployment occurs during recessions when AD falls. Deflation (falling general price level) is dangerous because: 1) Consumers defer spending expecting lower future prices (deflationary spiral); 2) Real value of debt rises, increasing bankruptcies; 3) Nominal interest rates hit the zero lower bound.
9	Arrange the 6 stages of Economic Integration in order of increasing integration, and distinguish Trade Creation from Trade Diversion in a Customs Union (HL).	1) Preferential Trade Area (PTA); 2) Free Trade Area (FTA, e.g., USMCA—removes internal tariffs but members keep independent external tariffs); 3) Customs Union (removes internal tariffs AND adopts a Common External Tariff); 4) Common Market (adds free movement of labour and capital); 5) Economic and Monetary Union (e.g., Eurozone—shared single currency and central bank, losing independent monetary/exchange rate policy); 6) Complete Economic Integration. Trade Creation: production shifts from a high-cost domestic producer to a lower-cost member partner after joining a customs union (welfare gain). Trade Diversion: production shifts from a low-cost non-member outsider (now facing the Common External Tariff) to a higher-cost member partner (welfare loss).
10	In HL Economics Asymmetric Information, distinguish between Adverse Selection and Moral Hazard with insurance/banking examples.	Asymmetric information occurs when one party to an economic transaction possesses more or better information than the other: 1) Adverse Selection occurs BEFORE a contract is signed (hidden information)—e.g., in private health insurance, high-risk individuals hide pre-existing conditions and are most likely to buy insurance, driving up premiums and pricing out healthy low-risk buyers (or Akerlof's 'Market for Lemons' in used cars); solved by screening and signalling (warranties). 2) Moral Hazard occurs AFTER a contract is signed (hidden action)—e.g., an insured driver taking greater risks or an investment bank making risky loans knowing taxpayers will bail it out; solved by deductibles/co-payments and regulation.
11	In IB Economics Paper 2 (15-mark International/Development Essay), how do you integrate the 5 Real-World Examples (RWEs) and Evaluation criteria?	Unlike Paper 1 (which requires real-world examples from your own study), Paper 2 provides data/text extracts. To hit Level 5 (13–15 marks): 1) Define core terms; 2) Draw 1–2 relevant, fully labelled diagrams (e.g., tariff diagram, exchange rate diagram, poverty cycle, or AD/AS + LRAS); 3) Quote specific data/statistics from at least two different extracts (Texts A, B, C, or Table) to anchor your analysis; 4) Evaluate using CLASPP (Conclusions, Long-term vs Short-term, Assumptions/ceteris paribus, Stakeholders winners/losers, Priorities, Pros & Cons).
12	In HL Business Management Operations, how do you construct a Critical Path Analysis (CPA / Network Diagram) and calculate Free Float vs Total Float?	At each node on a network diagram: Top-right = Earliest Start Time (EST, calculated in a forward pass from left to right; if two activities merge into a node, pick the HIGHEST EST); Bottom-right = Latest Finish Time (LFT, calculated in a backward pass from right to left; if two paths branch backwards from a node, pick the LOWEST LFT). The Critical Path is the longest path through the network where EST = LFT at every node and float = 0. Total Float = LFT − Duration − EST (maximum delay without delaying the whole project). Free Float = EST(next activity) − Duration − EST(current activity) (delay without delaying the very next activity).
13	In IB International Economics (HL), draw/calculate the effects of a Tariff vs an Import Quota vs a Production Subsidy on domestic price, imports, tax revenue, and welfare loss.	At free-trade world price P_w: domestic supply is Q₁, domestic demand is Q₄, and imports are (Q₄ − Q₁). 1) Tariff (P_w + t): domestic output rises to Q₂, consumption falls to Q₃, imports shrink to (Q₃ − Q₂); government collects tariff revenue c = t × (Q₃ − Q₂), and two deadweight welfare loss triangles form (production inefficiency + consumption loss). 2) Quota of (Q₃ − Q₂): same price rise and two welfare loss triangles, plus quota rent goes to foreign exporters/licence holders. 3) Production Subsidy of $s per unit: domestic price stays at P_w (no consumer loss!), domestic supply shifts right so output rises to Q₂, imports shrink to (Q₄ − Q₂), and there is only ONE deadweight welfare loss triangle (production inefficiency).
14	Compare the Monetarist / New Classical (SRAS/LRAS) model and the Keynesian (three-section AS) model of Aggregate Supply.	Monetarist / New Classical model: SRAS slopes upwards, while LRAS is vertical at full employment output Y_p (Natural Rate of Unemployment); an inflationary gap (Y > Y_p) or recessionary gap (Y < Y_p) self-corrects in the long run via flexible wages shifting SRAS until output returns to Y_p (so demand-side policies only cause inflation in LR). Keynesian AS curve has 3 sections: 1) Horizontal (deep recession, spare capacity—AD increases output with zero inflation); 2) Upward-sloping (approaching capacity, resource bottlenecks); 3) Vertical at Y_max. Keynesians argue wages are 'sticky downwards', so an economy can remain stuck in a deflationary gap indefinitely without fiscal stimulus.
15	State the Nine Central Concepts of the IB Economics syllabus and how they frame Paper 1 & Paper 2 evaluation.	The 9 overarching IB Economics concepts are: 1) Scarcity; 2) Choice; 3) Efficiency (allocative vs productive); 4) Equity (normative fairness in distribution, distinct from equality); 5) Economic Well-being (multidimensional quality of life); 6) Sustainability (meeting present needs without compromising future generations' resource base); 7) Change; 8) Interdependence; 9) Intervention (government vs market allocation).
16	In HL Microeconomics, explain Game Theory (Payoff Matrix, Dominant Strategy, Nash Equilibrium) in a Duopoly / Oligopoly Prisoners' Dilemma.	In a non-collusive oligopoly payoff matrix (e.g., Firm A and Firm B choosing 'High Price' vs 'Low Price'): a Dominant Strategy is a choice that yields a higher payoff for a firm regardless of what the rival does. When both firms pursue their individual dominant strategy to undercut ('Low Price, Low Price'), they end up in a Nash Equilibrium (where neither firm can improve its payoff by unilaterally changing strategy) that leaves BOTH firms with lower profits than if they had colluded on 'High Price, High Price'. This explains the incentive to form a cartel (e.g., OPEC) as well as the constant temptation to cheat on the cartel.
17	In HL Microeconomics (Theory of the Firm), compare the Revenue, Cost, and Profit conditions of Perfect Competition, Monopolistic Competition, Oligopoly, and Monopoly.	Economic Profit = Total Revenue − Total Economic Cost (Explicit + Implicit opportunity costs); thus Normal Profit occurs when Economic Profit = 0 (AR = AC at the MC = MR output). Perfect Competition: price taker (horizontal D = AR = MR = P), earns abnormal profit or loss in SR, but zero barriers to entry drive long-run equilibrium to P = MR = MC = minimum AC (both allocatively and productively efficient). Monopoly / Collusive Oligopoly: high barriers to entry allow abnormal profit (AR > AC at MC = MR) to persist in the long run, with P > MC (allocative inefficiency) and output below minimum AC.
18	In IB Business Management Unit 3 (Finance & Accounts), state the Profitability and Efficiency Ratios (GPM, NPM, ROCE, Inventory Turnover, Debtor Days, Creditor Days, Gearing).	Profitability: 1) Gross Profit Margin (GPM) = (Gross Profit ÷ Sales Revenue) × 100%; 2) Profit Margin (NPM) = (Net Profit before interest & tax ÷ Sales Revenue) × 100%; 3) Return on Capital Employed (ROCE) = (Net Profit before interest & tax ÷ Capital Employed) × 100%, where Capital Employed = Non-current liabilities + Total Equity (measures return per $1 invested; benchmark > bank interest rate). Liquidity: Current Ratio = Current Assets ÷ Current Liabilities (benchmark 1.5–2.0 : 1); Acid Test (Quick) Ratio = (Current Assets − Stock) ÷ Current Liabilities (benchmark ≥ 1.0 : 1). HL Efficiency: Gearing Ratio = (Non-current Liabilities ÷ Capital Employed) × 100% (>50% is highly geared/risky); Debtor Days = (Debtors ÷ Sales Revenue) × 365; Creditor Days = (Creditors ÷ Cost of Sales) × 365.
19	Explain Hofstede's Six Cultural Dimensions for International Marketing and Global HRM in HL Business Management.	Geert Hofstede's cultural dimensions explain cross-border management and marketing differences: 1) Power Distance (acceptance of hierarchical authority vs flat egalitarian empowerment); 2) Individualism vs Collectivism; 3) Masculinity vs Femininity (assertive competitiveness/material success vs cooperation/quality of life); 4) Uncertainty Avoidance (tolerance for ambiguity/risk vs strict rules); 5) Long-Term vs Short-Term Orientation (perseverance/thrift vs quick quarterly results/tradition); 6) Indulgence vs Restraint.
20	How do you calculate Payback Period, Average Rate of Return (ARR), and Net Present Value (NPV) in IB Business Investment Appraisal?	1) Payback Period: time taken for cumulative net cash inflows to recover the initial capital cost (Years + [Remaining cost needed ÷ Net cash flow in next year] × 12 months)—favours liquidity/short-term certainty but ignores cash flows after payback. 2) ARR = [(Total Net Cash Inflows − Initial Capital Cost) ÷ Lifespan in years] ÷ Initial Capital Cost × 100% (compare against target criterion rate and inflation/interest rate). 3) NPV (HL): multiply each year's net cash flow by its Discount Factor (1 / (1 + r)^t) to account for the time value of money, sum all Present Values, and subtract Initial Cost (accept project if NPV > 0).
21	In IB Business Management Unit 4 (Marketing), compare the 7Ps Marketing Mix for goods vs services and contrast Quota, Random, Stratified, and Cluster Sampling.	The traditional 4Ps for physical goods are Product, Price (cost-plus, penetration, skimming, predatory, psychological, dynamic), Promotion (Above-the-Line mass media vs Below-the-Line targeted/Through-the-Line digital), and Place (distribution channels). Services add 3 extra Ps (the 7Ps): People (customer-facing staff training/appearance), Processes (waiting times, payment/delivery smoothness), and Physical Evidence (store ambience, cleanliness, tangible touchpoints). Sampling: Random (equal chance, no bias), Stratified (proportional random sample from subgroups), Quota (non-random convenient selection matching subgroup quotas), Snowball (referrals).
22	In HL Business Management Budgets & Variance Analysis, how do you identify whether a Sales, Cost, or Profit Variance is Favourable (F) or Adverse (A)?	Variance = Actual Figure − Budgeted Figure (in magnitude), classified by its impact on Net Profit: 1) Favourable Variance (F): increases net profit compared to budget—occurs when Actual Revenue > Budgeted Revenue OR when Actual Costs < Budgeted Costs. 2) Adverse / Unfavourable Variance (A): decreases net profit compared to budget—occurs when Actual Revenue < Budgeted Revenue OR when Actual Costs > Budgeted Costs.
23	In IB Business Management (Unit 1), compare Sole Traders, Partnerships, Privately Held Companies (Ltd), Publicly Held Companies (PLC), Social Enterprises, and Cooperatives.	Sole Traders and Partnerships are unincorporated with UNLIMITED liability (owners are personally liable for business debts). Privately Held (Ltd) and Publicly Held (PLC) Companies are incorporated separate legal entities providing LIMITED liability to shareholders (Ltd restricts share sales to invited investors; PLC floats shares on a stock exchange via an IPO). For-profit Social Enterprises (e.g., microfinance, cooperatives) pursue the Triple Bottom Line (Elkington: People, Planet, Profit—social, environmental, and financial sustainability), whereas Non-profit NGOs reinvest 100% of surplus into social missions.
24	Explain the Boston Consulting Group (BCG) Matrix and how it links to the Product Life Cycle and Cash Flow in IB Business Management.	The BCG Matrix classifies a firm's product portfolio by Market Growth Rate (high vs low) and Relative Market Share (high vs low): 1) Stars (High growth, High share): generate high revenue but require heavy investment to defend growth; 2) Cash Cows (Low growth, High share: Mature stage): generate large positive net cash flows with low investment needs, used to fund Question Marks/R&D (milk strategy); 3) Question Marks / Problem Children (High growth, Low share: Launch stage): consume heavy cash; need holding/building into Stars or divesting; 4) Dogs (Low growth, Low share: Decline stage): harvest or divest.
25	In IB Economics Circular Economy & Sustainability, distinguish between Weak Sustainability and Strong Sustainability, and evaluate Carbon Taxes vs Cap-and-Trade Schemes.	Weak sustainability assumes manufactured human-made capital can substitute for depleted natural capital; Strong sustainability (Doughnut Economics / Kate Raworth) argues critical natural capital (climate stability, biodiversity) is non-substitutable and economic activity must stay between a social foundation and an ecological ceiling. Carbon Tax vs Cap-and-Trade (Tradable Permits): Carbon tax fixes the PRICE of carbon emissions (providing price certainty for green R&D investment, though the exact quantity of emission reductions is uncertain because PED is inelastic); Cap-and-Trade fixes the maximum QUANTITY of emissions (supply curve is vertical at the cap, guaranteeing environmental targets are met, though permit prices fluctuate with the business cycle).
26	Explain Force Field Analysis (Kurt Lewin) and Kotter & Schlesinger's 6 Strategies for Overcoming Resistance to Change in HL Business Management.	Lewin's Force Field Analysis weighs Driving Forces (pushing for strategic change, scored 1–5) against Restraining Forces (pushing against change, scored 1–5); management must strengthen driving forces and weaken restraining forces (Unfreeze → Change → Refreeze). Kotter & Schlesinger's 4 reasons for resistance to change are Self-interest, Misunderstanding/lack of trust, Low tolerance for change/fear of the unknown, and Different assessments of the situation; their 6 strategies are: 1) Education & communication; 2) Participation & involvement; 3) Facilitation & support; 4) Negotiation & agreement; 5) Manipulation & co-optation; 6) Explicit/implicit coercion.
27	In IB Economics Taxation & Inequality, how do you calculate Average Tax Rate (ATR) vs Marginal Tax Rate (MTR) and interpret a Lorenz Curve / Gini Coefficient?	Marginal Tax Rate (MTR) = (ΔTax Paid ÷ ΔIncome) × 100%; Average Tax Rate (ATR) = (Total Tax Paid ÷ Total Income) × 100%. Under a progressive income tax system (with tax-free brackets and rising marginal rates), MTR > ATR and ATR rises with income, redistributing income to shift the Lorenz Curve closer to the 45° line of absolute equality and lower the Gini Coefficient. Indirect taxes (like VAT/GST) are regressive because lower-income households spend a higher proportion of their total income on taxed goods.
28	In IB Business Management Unit 2 (Human Resource Management), compare Taylor, Maslow, Herzberg (Two-Factor Theory), McClelland, Deci & Ryan, and Adams' Equity Theory.	1) Taylor (Scientific Management): workers motivated solely by money (differentiated piece-rate pay, division of labour). 2) Maslow's Hierarchy: Physiological → Safety → Social → Esteem → Self-Actualisation. 3) Herzberg's Two-Factor Theory: Hygiene factors (pay, working conditions, company policy—prevent dissatisfaction but do NOT motivate) vs Motivators (achievement, recognition, responsibility, growth—create job satisfaction via job enrichment/empowerment). 4) McClelland's Acquired Needs: Need for Achievement (n-Ach), Power (n-Pow), and Affiliation (n-Aff). 5) Deci & Ryan Self-Determination Theory: Autonomy, Competence, Relatedness. 6) Adams' Equity Theory: workers compare their ratio of Inputs (effort/skill) to Outputs (pay/recognition) against peers.
29	What is the exact structure required for the 10-Mark Evaluation Question on the IB Business Management Paper 1/2/3 Case Study?	To score 9–10 marks: 1) Define key business terms and address the command term ('Discuss', 'Evaluate', 'Recommend'); 2) Apply at least two business management tools/theories quantitatively and qualitatively (using financial figures/tables from the stimulus); 3) Present balanced arguments FOR and AGAINST the strategic option from multiple stakeholder perspectives (shareholders, employees, customers, local community); 4) Conclude with a substantiated final recommendation weighing Short-Run vs Long-Run impacts and pointing out missing information in the stimulus.
30	In IB Business Management Unit 5 (Operations Management), compare Job, Batch, Mass/Flow, and Mass Customisation production, and Lean Production (JIT, Kaizen, Kanban, Cradle-to-Cradle).	1) Job production: customized one-off items (high unit cost, skilled craft labour, high margin); 2) Batch production: identical groups produced before retooling (economies of scale + variety, work-in-progress stocks); 3) Mass/Flow production: continuous automated assembly line of standardised goods (lowest unit cost, high capital set-up, monotonous). Lean Production (eliminating waste / muda): Kaizen (continuous incremental improvement by all workers), Just-in-Time (JIT, zero buffer stock vs Just-in-Case JIC), Kanban (pull-based stock replenishment cards), Total Quality Management (TQM, zero defects), and Cradle-to-Cradle (C2C circular design vs linear Cradle-to-Grave).
31	In IB Business Management Finance, distinguish between a Profit and Loss Account (Income Statement) and a Balance Sheet (Statement of Financial Position), and explain Depreciation (HL).	Income Statement (flows over a 12-month period): Sales Revenue − Cost of Sales (Opening stock + Purchases − Closing stock) = Gross Profit; Gross Profit − Expenses = Net Profit before Interest & Tax → Interest → Tax → Dividends + Retained Profit. Balance Sheet (snapshot at a single date): Total Assets (Non-current + Current) − Total Liabilities (Current + Non-current) = Net Assets = Total Equity (Share Capital + Retained Earnings). HL Depreciation of non-current assets: 1) Straight-Line Method = (Original Cost − Residual Value) ÷ Useful Life (constant annual expense); 2) Units of Production Method = [(Cost − Residual) ÷ Total lifetime output units] × Units produced this year.
32	In IB Economics Paper 3 (HL Quantitative), how do you calculate linear Demand and Supply functions (Qd = a − bP and Qs = c + dP) and the effects of a specific indirect tax?	In Qd = a − bP: 'a' is the Q-intercept (quantity demanded at P = 0) and '−b' is ΔQd / ΔP (note: gradient on a standard economics graph with P on vertical axis is −1/b). Set Qd = Qs to solve for equilibrium P* and Q. When a specific tax of $t per unit is imposed on producers, the new supply function replaces P with (P − t): Qs_tax = c + d(P − t). Set Qd = Qs_tax to find the new consumer price P_c, producer price P_p = P_c − t, new quantity Q_tax, government tax revenue = t × Q_tax, and deadweight welfare loss = ½ × t × (Q − Q_tax).