4Change in QdThe only thing that will result in a Change in Qd is a change in price of the product we are talking aboutThis is just a movement ALONG the curve that is already given—going from one point to another
6Change in Demand Abbreviated ΔD Change in D—a shift of the ENTIRE demand curve and it is caused when something changes the quantity of a product demanded at each price
7Shift of Demand Versus Movement Along a Demand Curve A change in demand is not the same as a change in quantity demanded.In this example, a higher price causes lower quantity demanded.Changes in determinants of demand, other than price, cause a change in demand, or a shift of the entire demand curve, from DA to DB.
8A Change in Demand Versus a Change in Quantity Demanded When demand shifts to the right, demand increases. This causes quantity demanded to be greater than it was prior to the shift, for each and every price level.
9Change in DThis is when you get an entirely NEW curve, so each point has changed. Now people are demanding more or less of the product at each price.Can you think of anything that would do this? What would cause you to buy more or less bottled water, even though the price of the bottled water stays the same?
10Change in DemandDeterminants of Demand—things that will cause a change in D--A change in the price of substitutes--A change in the price of complements--A change in consumer income--A change in population--A change in consumer tastes--A change in consumer expectations
11Increases in DemandThe entire demand curve shifts RIGHT. (Demand curves only shift RIGHT or LEFT, never UP or DOWN!) This is because at each given price there is now more quantity demanded. To show there is an increase in quantity, we move RIGHT because our quantity axis increases as we move further to the right.
12A Change in Demand Versus a Change in Quantity Demanded When demand shifts to the right, demand increases. This causes quantity demanded to be greater than it was prior to the shift, for each and every price level.
13Decreases in DemandThe entire demand curve shifts LEFT. This is because at each given price there is now less quantity demanded. To show there is a decrease in the quantity, we move left because our quantity axis decreases as we move further to the left.