Dear Lucy,
You might consider some of the scale construction techniques
available in the psych package. In particular, the iclust function
is meant for this very problem: how to form reliable item composites.
Bill
At 4:38 PM +0100 4/12/11, Christian Hennig wrote:
Dear Lucy,
not an R-rel
Dear Lucy,
not an R-related response at all, but if it's questionnaire data, I'd
probably try to do dimension reduction in a non-automated way by defining
a number of 10 or so meaningful scores that summarise your questions.
Dimension reduction is essentially about how to aggregate
the given i
First of all I should say this email is more of a general statistics questions
rather than being specific to using R but I'm hoping that this may be of
general interest.
I have a dataset that I would really like to use PCA on and have been using the
package pcaMethods to examine my data. The re
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