Re: cronbach alpha for binary responses

Posted by Olivier van der Vet on Dec 29, 2009; 10:27am
URL: http://spssx-discussion.165.s1.nabble.com/cronbach-alpha-for-binary-responses-tp1086058p1086074.html

Hello Eins,

 

You can use The Kuder-Richardson (KR20) coefficient. Via SPSS --> Is the same as Cronbach's alpha when items are dichotomous. See source.

http://faculty.chass.ncsu.edu/garson/PA765/reliab.htm

 

Olivier

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Sent: Tuesday, December 29, 2009 8:14 AM

Subject: cronbach alpha for binary responses

May I know if Cronbach alpha can be used as measure of reliability for a correct/wrong response (coded 0 or 1) items?  I want to use it for each subscale (with 8 items each) of my instrument with three scales.  Thank you for your comments.   Eins

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