Ib Economics Hl Formula: Booklet

The official IB booklet contains the "skeleton" formulas for: Elasticities (PED, YED, PES) Costs and Revenues (Marginal, Average, Total) Macro Indicators (GDP, CPI, Multiplier) International Trade (Terms of Trade)

Practice using the digital booklet in class, but the week before the exam, switch to the physical booklet. Tab it with sticky notes (if allowed) so you can flip to Costs or Macro instantly. ib economics hl formula booklet

And for development, the wasn’t a single formula but an understanding that the booklet reminded her: it’s the geometric mean of health, education, and income indices. No calculation needed—just the concept. The official IB booklet contains the "skeleton" formulas

These formulas are critical for calculating firm behavior, market efficiency, and consumer responsiveness. : Price Elasticity of Demand (PED) : No calculation needed—just the concept

| Concept | Formula | |---------|---------| | GDP (expenditure) | C + I + G + (X − M) | | GNI | GDP + Net income from abroad | | Inflation rate | (CPI_new − CPI_old) / CPI_old × 100 | | Unemployment rate | (Unemployed / Labour force) × 100 | | Labour force | Employed + Unemployed | | Multiplier | 1 / (1 − MPC) or 1 / (MPW) (MPW = MPS + MPT + MPM) | | Output gap | (Actual GDP − Potential GDP) / Potential GDP × 100 |

If $M$ grows by 10% and $Y$ grows by 3%, calculate inflation.