Part (A)
Part (B)
Snippets: Fitting A Model To Data
Remember if no pattern in a residual plot shows that linearity (linear relationship) exists between the variables.
If a pattern appears in the residual plot then a linear relationship between the variables is questionable.
Ex 3A Questions 1 to 6
Ex 3A Questions 7 to 9
Ex 3A Questions 10 to 13