Displaying 1 result from an estimated 1 matches for "tp3599548p3600553".
2011 Jun 15
2
Correlations by subgroups
I'm hoping there is a simple answer to this - it seems that there should be,
but I can't figure it out.
I have a matrix/data frame with three variables of interest - V1, V2, V3.
One, V1, is a factor with x levels (x may be a large number); I want to
calculate the correlation between the other two (i.e. cor(V2,V3)) for each
level, and store it as a vector of length x.
I should think this