Statistical tests

 Statistical tests
Posted: Tuesday, April 18, 2017 @ 11:10 AM
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Joined: 24 February 2009
Posts: 30

I gave my students the 'apply your knowledge' blue box questions in the Flanagan and Cardwell Year 2 book (Brown dog) Question 2d asks which test would you use and why, when: 'A study using a correlational technique in which one measure is ordinal and the other ratio'. After much to'ing and fro'ing I couldn't make my mind up between Pearsons R and Spearmans rho. Ratio data parametric, Ordinal data non parametric. I told them it would be unlikely such a question would come up, would it? Can somebody help?

Posted: Tuesday, April 18, 2017 @ 12:33 PM
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Joined: 24 February 2009
Posts: 30

Sorry, I should have added the box is on page 25.

Posted: Wednesday, April 19, 2017 @ 07:44 PM
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Joined: 5 November 2007
Posts: 10

I'd hope something like this wouldn't come up, but I'd go Spearman's as not all the data is meeting the criteria for a parametric test.

Posted: Thursday, April 20, 2017 @ 06:57 AM
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Joined: 4 August 2010
Posts: 217

Yes I agree with the above.  Both bits of data have to be interval for a parametric test.