A manager wishes to find out whether there is a relationship between the number of radio ads aired per week and the amount of sales of the product.
# of Ads 2 5 8 8 10 12
Sales Y 2 4 7 6 9 10
Develop the estimated regression equation.
Predict the amount of sales for 7 Ads per week
Predict the amount of sales for 15 Ads per week
SST, SSE, SSR
The solution gives regression model for the variables sales and advertisement cost. SSE, SSR, SST, correlation coefficient, scatter diagram are given with interpretations.