Change in quantity demanded refers to a change in the specific quantity of a good or service that consumers are willing to purchase at a particular price, while all other factors influencing consumption remain constant. This is represented as a movement along the demand curve.
On the other hand, change in demand refers to a shift in the entire demand curve due to a change in any factor other than price. This shift may occur due to changes in consumer tastes, income, prices of related goods, population size, advertising, and other factors that affect consumer behavior. This shift is represented as a movement of the entire demand curve either to the right (increase in demand) or to the left (decrease in demand).
• Change in quantity demanded vs change in demand
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