This is a statistical question, which is typically off topic here.
This list is primarily concerned with R programming questions,
although the two areas sometimes do intersect. I suggest you post on a
statistical list such as stats.stackexchange.com instead, especially
if you do not get a useful re
I have the results of a rating study in which ~30 participants rated a subset
of 20 items on 25 different dimensions.
I would like to perform PCA on these ratings to reduce the 25 different
dimensions. However, instead of doing this on the mean ratings for each
item, I would like to perform the PC
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