Displaying 2 results from an estimated 2 matches for "ctk121".
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ctk100
2012 Oct 04
2
t-test
Dear Group,
I want to do a t-test calculation on a large data set.
I am pasting some part of it
structure(list(Name = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 3L,
3L, 3L, 3L, 3L, 3L, 3L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L), .Label = c("CTK100", "CTK103", "CTK121"), class = "factor"),
Score = c(236.9726, 207.0055, 237.3464, 224.4774, 236.5034,
206.7382, 233.94, 240.31, 240.9, 235.15, 223.36, 248.67,
249.25, 201.4051, 244.1689, 182.2756, 229.001, 241.3211,
196.0453, 232.6055, 225.0783, 196.0453, 232.6055, 225.0783
)), .Name...
2012 Sep 25
1
Mean calculation of groups
...and I want to calculate mean of the first column which
is same name for example: CTK100 group
> dput(test)
structure(list(Name = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 3L,
3L, 3L, 3L, 3L, 3L, 3L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L), .Label = c("CTK100", "CTK103", "CTK121"), class = "factor"),
Score = c(236.9726, 207.0055, 237.3464, 224.4774, 236.5034,
206.7382, 233.94, 240.31, 240.9, 235.15, 223.36, 248.67,
249.25, 201.4051, 244.1689, 182.2756, 229.001, 241.3211,
196.0453, 232.6055, 225.0783, 196.0453, 232.6055, 225.0783
)), .Name...