Re: Chisquare and gamma coefficient

Posted by Henrik Lolle-2 on Jan 24, 2011; 12:10pm
URL: http://spssx-discussion.165.s1.nabble.com/SPSS-16-0-0-error-Two-step-cluster-Options-tp3353123p3355671.html

If the association is monotone, then Gamma is a more powerful test than
a chisquare test. But it sounds a bit strange that the value of Gamma
is .34 and is highly statistical significant when the p-value from the
chisquare test is above .05. How many cases do you have in your table?

Best,
Henrik

Quoting Eins Bernardo <[hidden email]>:

> I used chisquare to test the null hypothesis that the two ordinal
> variables with 4 categories each are uncorrelated.  The chisquare is
> non-significant (p>.05).  The gamma coefficient is .341 and highly
> significant (p<.05).  Why gamma is significant while chisquare is
> insignificant.  I confused about this.  I appreciate any comments.
>
> Thank you.
> Eins
>
>

************************************************************
Henrik Lolle
Department of Economics, Politics and Public Administration
Aalborg University
Fibigerstraede 1
9220 Aalborg
Phone: [phone]
************************************************************

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