Both CORRELATIONS and RELIABILITY are in the version 0.7.x (aka "master"). If you want to try it out I suggest that you download a tarball from http://pspp.benpfaff.org/~blp/
The RELIABILTY command is not complete. But it does calculate Cronbach's
Alpha which is what most people seem to want it for.
J'
On Fri, Nov 13, 2009 at 09:37:39AM -0600, Alan Mead wrote:
> Jason Stover wrote:
>> I'm not sure about the time frame, but among the new statistical
>> procedures will be GLM. What kinds of analyses do you most need?
>>
>
> Are correlations available yet? (Last week, my student just showed me
> his PSPP installation and "Analyze > Correlations" was not an option.)
>
> I have taught both statistics and research methods at the undergraduate
> level and PSPP is completely useless to me until it includes the
> computation of (simple, Pearson) correlations. About a year ago, I
> tried to figure out what the problem was and emails I dug out of the
> mailing list archives seemed to suggest that the PSPP team was waiting
> for some background plumbing to make the calculation of correlation
> matrices efficient. Efficient would be nice, but while that "right-way"
> plumbing were being implemented, it sure would be nice to have an
> inefficient, naive implementation today. After all, the actual SPSS
> (i.e., PASW) is getting progressively slower with each version... a
> naive implementation in PSPP might well be faster than PASW 17. (This
> is of such importance to me that I installed GSL to write my own PSPP
> patch but I got distracted by C and gsl and started writing a program to
> perform latent semantic analysis.)
>
> I'm honestly shocked that no one else has mentioned correlations in this
> thread... Is there a build switch that does enable some naive
> implementation of correlations? Or they've been implemented and I
> missed it? [I've got to be honest, I don't bother installing new
> versions because until basic descriptive stats are implemented (like the
> ability to generate the correlation matrix of variables that would be
> submitted to GLM or Factor) PSPP is simply unusable.]
>
> Also, Reliabilities ('Analyze > Scale > Reliabilities') would also be
> useful for me.
>
> -Alan
>
>
> --
> Alan D. Mead, Ph.D. Assistant Professor, Institute of Psychology
> Scientific Adviser, Center for Research and Service
> Illinois Institute of Technology
> 3101 South Dearborn, 2nd floor
> Chicago IL 60616
>
> Skype: alandmead
> +312.567.5933 (Campus)
> +815.588.3846 (Home Office)
> +312.567.3493 (Fax)
>
> http://mypages.iit.edu/~mead
> http://www.center.iit.edu
> http://www.alanmead.org
>
> I slept and dreamt that life was joy.
> I awoke and saw that life was service.
> I acted and behold, service was joy.
> -- attributed to Rabindranath Tagore
>
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