d. Include the manufacturer in a multiple linear regression analysis using a \"d
ID: 3384183 • Letter: D
Question
d. Include the manufacturer in a multiple linear regression analysis using a "dummy" variable. Does it appear that some manufacturers can command a premium price? Hint: You will need to use a set of indicator variables. (Round your answers to 2 decimal places. Negative amounts should be indicated by a minus sign.) Screen Manufacturer Sharp Price = Manufacturer Sony . Test each of the individual coefficients to see if they are significant. (Round your answers to 2 decimal places. Leave no cells blank be certain to enter "O" wherever required Negative amounts should be indicated by a minus sign.) Predictor Constant Screen Manufacturer Sharp Manufacturer Sony 7.13Explanation / Answer
A)
Yes. The correlation between them is 0.8565
b) Here Price is dependent variable and sizee is independent variable.
c 1)The Regression equation is y =a+bx
hence from Excel the fitted regression is y(price)=-861.037 +72.145 (screen)
c2 )Here slope=72.144 . for each inch increase in screen size, the price increases $72.145 on an average.
Screen Price Screen 1 Price 0.856592 1Related Questions
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