The information can be used to estimate an inverse demand function and a demand function as E. the demand curve, and the inverse demand curve can be calculated from it.
A demand function with price and income as explanatory variables can be generated from the focus group by capturing buying pattern data at different prices and levels of income.
It should be noted that a demand function simply shows the relationship that exists between the quantity demanded and price. Based on the question, using a demand function can be computed easily since quantity is a function of price.
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