Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: ksmirnov and normality
From
David Hoaglin <[email protected]>
To
[email protected]
Subject
Re: st: ksmirnov and normality
Date
Fri, 8 Feb 2013 21:06:07 -0500
Quantile-quantile plots are a good way to start. Real data never
follow a normal distribution, so that questions are whether a normal
distribution is an adequate approximation and how the data depart from
a normal distribution.
David Hoaglin
On Fri, Feb 8, 2013 at 9:05 AM, JVerkuilen (Gmail)
<[email protected]> wrote:
> 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.
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/