Re: Question About Tests of Normality and Choice of Statistical Analysis

Posted by Santosh Pande on Jan 01, 2015; 2:53am
URL: http://spssx-discussion.165.s1.nabble.com/Question-About-Tests-of-Normality-and-Choice-of-Statistical-Analysis-tp5728302p5728316.html

Wonderful presentation Bruce..........thanks for sharing !

-----Original Message-----
From: SPSSX(r) Discussion [mailto:[hidden email]] On Behalf Of Bruce Weaver
Sent: Wednesday, December 31, 2014 10:10 PM
To: [hidden email]
Subject: Re: Question About Tests of Normality and Choice of Statistical Analysis

Hi Brian.  My thoughts on testing for normality as a precursor to a parametric test are summarized in a conference presentation I gave a few years ago.  A PDF of the slides can be found here:

https://www.nosm.ca/uploadedFiles/Research/Northern_Health_Research_Conference/Weaver,%20Bruce_Silly%20or%20Pointless%20Things.pdf

Cheers & Happy New Year.
Bruce



bdates wrote

> With regard to tests of normality such as Kolmogorov-Smirnov,
> Shapiro-Wilk, Anderson-Darling, etc., is anyone out there using the
> results to determine whether to perform a parametric (e.g., t-test) or
> non-parametric (e.g., Mann-Whitney U) on a dataset?  If the data are
> interval, but are found not normal according to one of these tests, is
> that enough to discard a parametric statistic?  Thanks.
>
> Brian
>
> Brian Dates, M.A.
> Director of Evaluation and Research | Evaluation & Research |
> Southwest Counseling Solutions Southwest Solutions
> 1700 Waterman, Detroit, MI 48209
> 313-841-8900 (x7442) office | 313-849-2702 fax

> bdates@

> <mailto:

> bdates@

> > | www.swsol.org<http://www.swsol.org/>
>
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Bruce Weaver
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