Hi:
Q1: Try something like
# Formula interface works for R-2.11.0 and later versions
RTavg <- aggregate(RT ~ word, data = alldat, FUN = mean)
merge(CCCW, RTavg, by.x = row.names(CCCW), by.y = 'word', all = TRUE)
If the merge doesn't work (which is entirely possible), you might want
to define a v
Hi all,
I have 2 data frames the first contains a list with repeats of words
and an associated response time (RT) measure for each word. The second is a
tabulation of each unique word and other information such as the amount and of
responses for each word. I need to determine the mean RT
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