Final answer:
A demand schedule is a table that shows the relationship between price and quantity demanded for a certain good or service. Economists use this data to create a demand curve that illustrates how changes in price affect the quantity of goods demanded.
Step-by-step explanation:
A demand schedule is a table that shows a range of prices for a certain good or service and the quantity demanded at each price. It helps economists understand how price changes affect the quantity of goods demanded. By plotting the data from a demand schedule on a graph, economists can create a demand curve that illustrates the relationship between price and quantity demanded.