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Explain the Expenditure Method of Measurement of Elasticity

Explain the Expenditure Method of Measurement of Elasticity.

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Expenditure or Outlay Method: Expenditure method was developed through Marshall. In this method, the elasticity is measured through estimating the changes in whole expenditure like a result of changes in price and quantity demanded. It has three components.

When the price changes but whole expenditure remains constant then unit elasticity exists.

When the price changes but whole expenditure moves in the opposite directions then demand elastic is (>1).

When the price changes and whole revenues moves in similar direction, demand is inelastic (<1).

It can be expressed by the given diagram.

1197_Expenditure Method.png

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