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st: RE: Item selectivity
There are many possible statistics that might be used for item selection in the scale construction process. The Stata command alpha (see help alpha) gives the Chronbach's alpha statistic, plus calculates alpha if item is deleted and item-rest correlations.
-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Vanessa
Mahlberg
Sent: Tuesday, March 20, 2007 11:28 AM
To: [email protected]
Subject: st: Item selectivity
Dear stata members,
I want to do an item selectivity but I don?t know the stata command (I
always use SPSS). Is it right that I use the correlation between the
item and the total sum of the construct, e.g:
correlate allgAZ GesamtAZ
But then I don?t get any significane level.......
Thanks for your support
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
