The expenditure multiplier: assumptions and leakages
Demo study note using synthetic data. Trace an illustrative spending injection through a simple multiplier model and examine when its prediction is limited.
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A classroom price index and purchasing power
Demo study note using synthetic data. Build a two-part weighted price index and distinguish a nominal wage increase from a real wage change.
A price ceiling and a shortage: a simple market model
Demo study note using synthetic data. Solve a linear demand-and-supply model and examine the trade-offs of a binding maximum price.
Price changes and demand: an elasticity exercise
Demo study note using synthetic data. Use invented sales data to calculate price elasticity and explain why higher prices can reduce revenue.