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IN GENERAL CONCEPT OF NEEDS ASSESSMENT APPEARS TO RESSEMBLE ESTIMATION OF DEMANDS FOR CERTAIN GOODS OR SERVICES. IN ECONOMIC TERMS DEMANDS OF CERTAIN GOODS OR SERVICES ARE LINKED WITH PRICE OR COST OR SUPPLY OF THAT GOODS OR SERVICES. DEMAND ESTIMATION IN THIS ECONOMIC SENSE IS A DEPENDENT VARIABLE AND PRICE, ETC ARE INDEPENDENT OR EXPLANATORY VARIABLES.