Examlex
About a scale (set of questions) it can be said that it is if it measures what it purports to measure.
Isoelastic Demand Curve
Demand curve with a constant price elasticity.
Price Elasticity
The measure of how much the quantity demanded of a good responds to a change in the price of that good, often used to understand the sensitivity of consumers to price changes.
Income Elasticity
Income elasticity measures how the demand for a good or service changes in response to changes in consumer income.
Marginal Utility
The extra pleasure or benefit gained by a consumer from consuming an additional unit of a product or service.
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