Income tends to increase the purchasing power of the consumer. Hence increases income is proportional to demand.
The price of other commodities affects with an increase in the price of one shifts demand to its close substitute with a lower price.
Population is proportional to higher the population the higher the demand of goods and services and vice versa.
Change in fashion since people tend to go for things demand for obsolete commodities that are in vogue.
Change in people demand tends to increase with their taste therefore a change in taste causes a change in demand
Age distribution is the population of a particular age group, the higher the demand in the commodity used by that age group and vice versa. For example, tobacco is taken by people between the age of 18 and above thus the demand in tobacco depends on the number of people within this age limit.
Taxation places on particular increase the price of such goods hence reducing the demand of the commodity.
The demand of certain kind of commodities tends to increase during festive periods. During the muslim’s eid-ul-fitr the demand gift items increase, while during Christmas season the demand for rum increases.
Expectation of changes in price of a commodity is expected to either fall or rise, there will be an increase or decrease in the demand of that commodity.
Invention of new commodity people go for newer commodity thus reduces the demand for older ones. For example, the demand for Pentium 3 laptops is reducing as peo