Question
Module 2Demand Theory and Estimation Activity 4Case 3 Using SPSS, MS Excel or other statistical software package, run the given data and answer the following
Module 2Demand Theory and Estimation
Activity 4Case 3
Using SPSS, MS Excel or other statistical software package, run the given data and answer the following in MS Word.
Assume that Electronix, Inc., a small startup company that distributes a particular business machine, has the following monthly data on unit sales (Q), price (P), advertising expenditures (AD), and personal selling expenditures (PSE) over the past year.
If a linear relation between unit sales, price, advertising, and personal selling expenditures is hypothesized, the regression equation takes the following form: where is the number of units sold, P is the average price per month, D is advertising expenditures, PSE is personal selling expenditures, and is a random disturbance term - all measured on a monthly basis over the past year.
B. Estimate the regression equation of on the explanatory variables.
C. Check for consistency in the relationship between quantity demand and the three explanatory variables as postulated in demand theory by indicating the change in the quantity demanded of the commodity for each unit change in the explanatory variables.
Show all results in two decimal places.
MonthUnits SalesAdvertising Personal Selling
Price ($) Expenditures ($) Expenditures ($)
January2,5003,80026,80043,000
February2,2503,70023,50039,000
March1,7503,60017,40035,000
April1,5003,50015,30034,000
May1,0003,20010,40026,000
June2,5003,20018,40041,000
July2,7503,20028,20040,000
August1,7503,00017,40033,000
September1,2502,90012,30026,000
October3,0002,70029,80045,000
November2,0002,70020,30032,000
December2,0002,60019,80034,000
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