another definition in the dictionary:
Service_Heterog-see Variability.
Inelasticity_of-demand which is not greatly affected by a change in the price of the product. See Elasticity of Demand.
Opinion_Leader-an individual who actively provides opinions about products to others or from whom views, opinions and advice is sought. See Key Influence People.
Depreciation_-an allowance made in a balance sheet for wear and tear, a measure of the loss of value of a fixed asset because of use or obsolescence.
Marketing_Resea-the aims or purpose of a marketing research study, objectives are often a expressed as hypotheses to be tested.