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From |
Maarten buis <maartenbuis@yahoo.co.uk> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Problem in factor analysis & Cronbach's alpha |

Date |
Tue, 11 Aug 2009 20:53:08 +0000 (GMT) |

--- On Tue, 11/8/09, Xu, Haiyong wrote: > I got an error message which I don't understand when I was > testing the Cronbach's alpha of the factors' scores after > doing factor analysis to a few variables. <snip> > . factor pcs3 mcs3 sfindex3 eurq2 depress_score1_rev, pcf <snip> > . predict factor1 factor2 <snip> > . alpha factor1 factor2, std item detail > variable __00000P not found > r(111); I agree that this is not an informative error message, and that that should be fixed. My intuition says that it doesn't make sense to compute a Cronbach's alpha on factor scores rather than the original variables, but I will happily bow to superior wisdom, which I am sure exists in abundance in this case. One such source of superior wisdom that you have close at hand are the good people of ATS: http://www.ats.ucla.edu/stat/Schedule/walk_in.htm We at the list will happily help you, but you just can't beat a face to face discussion. Hope this helps, Maarten ----------------------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://home.fsw.vu.nl/m.buis/ ----------------------------------------- * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Problem in factor analysis & Cronbach's alpha***From:*"Xu, Haiyong" <HXu@mednet.ucla.edu>

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