Question

13. You run a Box-Cox test on your linear regression model to see what sort of transformation is needed, if any. The estimate for λ turns out to be 1.03 with a 95% confidence interval of (0.97, 1.09). What transformation do you recommend for the response variable?: *
(A) A square root transformation
(B) An inverse transformation
(C) A log transformation
(D) A transformation is not necessary here

14. Which of the following statements is/are correct?
(I) A confidence interval is for a mean.
(II) A prediction interval is for a specific value.
(III) A confidence interval is wider than a prediction interval.
: *
(A) I only
(B) III only
(C) I and II only
(D) I, II, and III

Answer 1