Chapter 4:

Question 1

Total Sum Of Squares:

Answer 1

SST=SSE+SSR=Summation of (yi-ybar)^2

Question 2

Explained Sum Of Squares I:

Answer 2

SSE=Summation of (yihat-ybar)^2

Question 3

Explained Sum Of Squares II:

Answer 3

SSE=Beta1hat^2*Summation of (xi-xbar)^2

Question 4

Residual Sum Of Squares:

Answer 4

SSR=Summation of uihat^2

Question 5

Goodness Of Fit:

Answer 5

R^2=SSE/SST

Measures the percentage of the variation in the dependent variable that can be explained by the variation in the independent variable.