Reconsider the experiment in Problem 5-22. Use the Box-Cox procedure to determine if a transformation on the

Question:

Reconsider the experiment in Problem 5-22. Use the Box-Cox procedure to determine if a transformation on the response is appropriate (or useful) in the analysis of the data from this experiment.

Problem 5-22.

An article in the Journal of Testing and Evaluation (Vol. 16, no. 2, pp. 508-515) investigated the effects of cyclic loading and environmental conditions on fatigue crack growth at a constant 22 MPa stress for a particular material. The data from this experiment are shown below (the response is crack growth rate):

Environment Frequency Air H20 Salt H,O 2.29 2.06 1.90 2.47 2.05 1.93 10 2.48 2.23 1.75 2.12 2.03 2.06 2.65 3.20 3.10 2.68 3.18 3.24 1 2.06 3.96 3.98 2.38 3.64 3.24 2.24 11.00 9.96 2.71 11.00 10.01 0.1 2.81 9.06 9.36 2.08 11.30 10.40