Question

2. Multiple coefficient of determination Aa Aa Macroeconomics is the study of the economy as a whole. A macroeconomic variable is one that measures a characteristic of the whole economy or one of its large-scale sectors. In forecasting the sales of a product, market researchers frequently use macroeconomic variables in addition to marketing mix variables (marketing mix variables include product, price, place [or distribution], and promotion) A market researcher is analyzing an existing multiple regression model that predicts sales for different brands of digital cameras. The dependent variable is: monthly sales of specified digital camera (in thousands of dollars) = The independent variables are the following marketing mix variables: X1ratings given by a popular digital photography magazine x2average sale price (in dollars) x3advertising spending for the given month (in thousands of dollars) The estimated multiple regression equation using data with 33 observations is as follows: 2,350 + 204x1-194x2 + 373x3 y The regression just given yields a multiple coefficient of determination of R2 -0.49 and an adjusted multiple coefficient of determination of R2%.-0.44. The multiple coefficient of determination indicates the proportion of variability in the dependent variable that can be explained by the regression model.

Answer 1

Solution en ezuation the ien morlh Gbp aST SST

(t-o-Y19561 C33-1) 33-4-1 (d) M3E 2012 8798 mST sT mST IT, 0-53