Chapter 12.1, Problem 4E

To determine

To Explain: that the state for performing inference about the ${\beta }_1$ slope of the line of population regression is not met on the basis of given figure.

Answer to Problem 4E

Equal variance needs have not been met.

Explanation of Solution

Given:

  

There are conditions for the regression inferences are normal, equal standard deviation, random, independent and linear. It is observed that the linear condition is not satisfied, the reason is that the residual figure represent the strong curvature and therefore the association between the variables looks to be curved instead of linear.