Suggested answer to exercise: Transformations, 4

Question 4: Are these assumptions likely to be met here?

Suggested answer

Inspection of the data re-drawn from the original paper shows that the data are positively skew and the variance is slightly higher in the group with the higher mean (CHD cases). This suggests that the data should be transformed prior to analysis.

Back to Exercise: Transformations.

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Last updated: 27 July, 2009.