Frederique Richy
>
> I am new in STATA and I need somme help to perform MCA and
> cluster of
> variables.
> I would like to perform a MCA (Multiple Correspondence
> Analysis) with Stata 7.
> I tried to compare different qualitative variables with
> two, three or four
> modalities.
> I used the command mca. I did the same analysis with
> another data analysis
> software "SPAD". Then I compared the results of the two
> different software
> to check Stata 7 results. The results were quite the same
> for data like
> coordinates, contributions of principal axis, explained
> inertia of axes,
> given approximately the same representation. However, the
> values of the
> principal inertia component were completely different.
< snip >
> To check the MCA results, I would like to perform a cluster
> analysis which
> would compare distance between variables, more precisely
> between variables
> modalities. The problem is that I did not find how to
> perform a cluster
> analysis between variables on Stata 7. I only found how
> performing an
> analysis between the observations. I don't know if this
> kind of analysis is
> possible on Stata7, is it?
On MCA I think you need direct discussion
with Philippe Van Kerm, who wrote this command.
Clustering variables was discussed recently
on Statalist. In essence, you need to transpose
your data. Check out -xpose-.
Nick
[email protected]
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