Re: Curious about K-S test in NPTESTS

Posted by Anthony Babinec on Dec 09, 2018; 10:34pm
URL: http://spssx-discussion.165.s1.nabble.com/Curious-about-K-S-test-in-NPTESTS-tp5737122p5737128.html

Bruce,
You need a period in that URL:

https://www.uvm.edu/~dhowell/StatPages/More_Stuff/OrdinalChisq/OrdinalChiSq.html

Sad news about David Howell.

Tony Babinec

-----Original Message-----
From: SPSSX(r) Discussion <[hidden email]> On Behalf Of Bruce Weaver
Sent: Sunday, December 9, 2018 4:13 PM
To: [hidden email]
Subject: Re: Curious about K-S test in NPTESTS

CROSSTABS also reports a Chi-square test of linear-by-linear association, which you could use in this situation.  See David Howell's nice note on it
here:

https://www.uvm.edu/~dhowell/StatPages/More_Stuff/OrdinalChisq/OrdinalChiSqhtml

By the way, for those who may not have heard, David Howell died on Oct 4 of this year.  He'd been fighting cancer for about 8 years.  



Rich Ulrich wrote

> A likert-type scaling has order, and the ordinary contingency table
> does not respect that. You have a 2 d.f. test rather than a 4 d.f.
> test, and the /usual/ difference between distributions is the mean.
> Having a hole in likert-type responses (1s, least number of 2s, 3s,
> 4s, 5s) would be unusual and suspicious all by itself, but is among
> what the contingency table tests.
>
> If you want a test on variances, in addition to the usual test on
> means, the "powerful" manner of testing is to conduct two separate tests, each
> with 1 d.f.   I think it also would be clearer in a report on results to
> describe
> two tests.
>
> For the simple variance-ratio F-test, I get F=1.923, p < .001 (same
> p-report I gave for the 2x5 table).  With more precision: this one is
> p= 0.00069, while the 2x5 table was  p= 0.0008-something.
>
> --
> Rich Ulrich
>
> ________________________________

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