The model used is MPG b0 b1 WEIGHT What is the estimated r

The model used is: MPG = b0 + b1 WEIGHT What is the estimated regression ? What are the estimated values of b0 and b1 ? What sort of relationship exists between MPG and car weight? Does the relationship make sense to you? Why or why not? In the context of this problem, give interpretations of the values of b0 and b1 ?

Solution

You have not attached computer output.

a) Estimated regression is , first obtain the values of b0 and b1 from the computer output and substitute in the equation

MPG =b0+b1 WEIGHT

b) Obtain b0 = mean of y - b1*mean of x ; and b1 =SSxy/SSx from the output.

c) check the ANOVA table for b1, if the P-value is less (<0.05) the relationship is signficant otherwise not.

d)b1 is the slope of the regression line ; This is the amount that Y variable will change for each 1 unit change in the X varaible.

b0 is the slope of the regression line. This is the value of Ywhen X=0