[R] how to use apply on a two variable t-test
Jason Dunsmore
jbdunsmo at utmb.edu
Wed Dec 31 16:12:41 CET 2003
does anyone know how to use the apply function on a two-variable t-test?
i've tried everything.
apply(data[1:4],1,t.test) # works, but only a one-variable test
apply((data[1:4],data[5:9]),1,t.test) # returns a syntax error
i've also tried using the for loop:
for (i in 1:1000) t.test(data[i,1:4],data[i,5:9])
doesn't print anything! it processes for awhile, so i know it's doing
the calculations.
t.test(data[1,1:4],data[1,5:9])
works fine! prints to the screen as i'd expect.
i have checked and double checked that sink() is empty. please also
send your reply to jbdunsmo at utmb.edu. i receive the digest version of
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thanks for any help,
jason
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