Yongmao yongmao at cc.huji.ac.il
Tue May 4 10:41:11 EST 1999

How to know the samples are in gaussian distribution or not? In the eye of
statistitians 50% of scientific papers used wrong test method,
especially when we do parametric test, the key point is it is difficult 
to tell my sample is nornal distribution or not. In some cases we can't 
increase the sample number becuase of too much work and economic
reasons. How to solve the problem?

On Thu, 29 Apr 1999, carla wrote:

> You should know if samples have a gaussian distribution or not. If you have
> to compare groups with different standard deviation you should use a non
> parametric test, if SD are not different you could use a parametric test
> Carla
> Andrew Hall ha scrittonel messaggio
> <7ga64j$d7t$1 at nclient5-gui.server.virgin.net>...
> >Anyone know what the correct correlation test is fora 42 sample
> >comparison. The samples are random. Normally I would use a non-parametric
> >test such as spearmans but I have been told for a group this size (n=42)
> >that Pearsons can be used?
> >
> >

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