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Re: st: ksmirnov and normality


From   "JVerkuilen (Gmail)" <jvverkuilen@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: ksmirnov and normality
Date   Fri, 8 Feb 2013 09:05:37 -0500

Kolmogorov-Smirnov has such a non-specific alternative hypothesis that
its power is VERY low. Also, normality testing is often not very
useful, so I would encourage you to consider whether it's even very
informative. Plots such as qnorm is often more helpful.



On Fri, Feb 8, 2013 at 6:42 AM, Nahla Betelmal <nahlaib@gmail.com> wrote:
> dear statalist,
>
> I found a paper says that Kolmogorov-Smirnov test is used for
> normality test in SPSS and SAS, but not in STATA. In STATA ksmirnov
> command is used for the one or two samples Kolmogorov-Smirnov test.
> the paper http://faculty.ksu.edu.sa/hisham/Documents/Students/a_PHCL/Testing_Normality.pdf,
> page 2
>
> I have two questions, does this mean that we can not use ksmirnov
> command to test normality for one sample in STATA?
> Second, what is the meaning behind STATA ksmirnov command is used for
> the one sample Kolmogorov-Smirnov test, other than normality test?
> what is the point the author wants to make?
>
> N.B my sample size is 300 observations
>
>
> Many thanks
>
> Nahla Betelmal
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-- 
JVVerkuilen, PhD
jvverkuilen@gmail.com

http://lesswrong.com/

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