Economists say there has been a change in demand when there is

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A change in demand refers to a shift of the demand curve, which means that at any given price, buyers now demand a different quantity than before. This could be caused by a change in consumer preferences, income levels, or the availability of substitutes, among other factors. A movement along the demand curve, on the other hand, is called a change in quantity demanded, and occurs when the price of a good or service changes but all other factors remain constant.

Economists Say There Has Been a Change in Demand When