Applied Multivariate Statistical Analysis (6th edition) Textbook Solutions Chapter 4 Problem 27
Consider the radiation data (with door closed) in example 4.10. Construct a Q–Q plot for the natural logarithms of these data. [Note that the natural logarithm transformation corresponds to the value λ = 0 in (4-34).] Do the natural logarithm appear to be normally distributed? Compare your results with Figure 4.13. Does the choice or λ = 0 make much difference in this case?
The Q-Q Plot is shown below:
The Q-Q Plot is reasonably straight.
rQ= 0.978 (λ=0)
For λ=1/4, rQ =0.99
So λ=1/4 is a bit better choice for normalizing transformation.
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