For the drill experiment, the scaled lambda plot in Figure 3.3 suggests that the best three transformations are log(𝜆 = 0), reciprocal square root (𝜆 = −1 2 ), and square root (𝜆 = 1 2 ). Compare...

For the drill experiment, the scaled lambda plot in Figure 3.3 suggests that the

best three transformations are log(𝜆 = 0), reciprocal square root (𝜆 = −1

2

),

and square root (𝜆 = 1

2

). Compare the three transformations in terms of some

model adequacy measures for the chosen models for the three transformed

responses. (Hint: Use residual plots and a model selection criterion such as

the Cp or BIC criterion given in Section 1.7.)