Re: Shapiro-Wilks Statistic

Posted by 3J LEMA on
URL: http://spssx-discussion.165.s1.nabble.com/Shapiro-Wilks-Statistic-tp5739693p5739715.html

Hi, Bruce.

Mine was just an exercise. 

If we don't bother to test normality, why did book authors bothered to discuss normality and parametric  tests. -:) Moreover, why SPSS bothered to include procedures for testing normality? -:)

-:)

3J

On Thu, 1 Oct 2020 at 20:26, Bruce Weaver <[hidden email]> wrote:

I'll repeat the question I asked earlier:

> Why do you [Harley & 3J LEMA] want to test for normality?

If it is to justify use of a parametric test, my advice would be, "Don't
bother!"   ;-) 



3J LEMA wrote
> Any tips on when to use the Shapiro-Wilk statistic over the
> Kolmogorov-Smirnov Statistic in testing normality?
>
> Thank you.





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