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Article #3596Re: Coefficient Alpha
From: Melvin Klassen
Date: Fri, 31 Jan 1992 22:00
Date: Fri, 31 Jan 1992 22:00
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2242 bytes
<PAVTROD@UMCVMB> asks: > >Could someone provide some assistance in pointing me to the >commands which are used in SAS for computing coefficient alpha. _________________________________________________________________________ ! Date: Thu, 30 Jan 1992 11:15:57 CST ! Zender: "SAS(r) Discussion" <SAS-L@UALTAVM> ! From: Janet Buckingham <JAN@CCFVAX.CCF.SWRI.EDU> ! Organization: Southwest Research Institute, San Antonio, Texas ! Subject: Cronbach's Alpha ! ! Is there a way to compute Cronbach's Alpha in SAS? _________________________________________________________________________ ! Date: Fri, 31 Jan 1992 12:44:32 EST ! From: Ronald Cody EdD <cody@UMDNJ.EDU> ! Subject: Chronbach's Alpha ! ! Use the ALPHA option in PROC CORR: ! ! PROC CORR ALPHA; ! VAR var_list; ! ! This will produce coefficient alpha for each variable in the list ! against each of the remaining variables. ! ! You can also do it yourself using PROC MEANS and a short data step. ! An example of a test with 10 items (k=10) and a total raw score (RAW) ! is given below: ! ! PROC MEANS NOPRINT DATA=SCORE; ! VAR S1- S10 RAW; ! OUTPUT OUT= VAROUT VAR= VS1-VS10 VRAW; ! DATA _NULL_; ! FILE PRINT; ! SET VAROUT; ! SUMVAR = SUM (OF VS1-VS10); ! ALPHA = (10/9)*(1-SUMVAR/VRAW); ! PUT ALPHA=; ! RUN; ! ! Where, in the alpha formula, the first factor is k/(k-1). ! ! Hope this is of some help.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f5efb,98660153bf100606 X-Google-Attributes: gidf5efb,public X-Google-ArrivalTime: 1992-01-31 15:25:30 PST Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU Newsgroups: bit.listserv.stat-l Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!uwm.edu!psuvax1!psuvm!auvm!uvvm!klassen References: <STAT-L%92013019481866@VM1.MCGILL.CA> Message-ID: <92031.140000KLASSEN@UVVM> Date: Fri, 31 Jan 1992 14:00:00 PST Sender: "STATISTICAL CONSULTING" <STAT-L@MCGILL1.BITNET> Comments: Warning -- original Sender: tag was NETNEWS@UVVM.UVIC.CA From: Melvin Klassen <KLASSEN@UVVM.BITNET> Subject: Re: Coefficient Alpha