Determine the Specific Place of demand
The demand should relate to a specific market as well. For instance, every year in the town of Dehradun, demand for school bags is 4,000 at a price of Rs. 200.
Therefore the demand of a product is an effective need that determines the quantity of a product that will be bought at a specific price in a specific market at some stage in a particular period. However the significance of a specific market or place isn't as significant as the time period and price for which demand is being measured.