In the two-way layout, let s2 ij be the sample variance of the nij observations for the ith level of factor A and the jth level of factor B. By treating zij = ln s2 ij as the response, analyze zij for...

In the two-way layout, let s2

ij be the sample variance of the nij observations

for the ith level of factor A and the jth level of factor B. By treating zij = ln s2

ij

as the response, analyze zij for the bolt experiment and compare the results

with the findings from the box-whisker plot in Figure 3.1. (Note: The use of

the log transformation of s2

ij will be explained in Section 4.11.)