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oil
2005 Nov 04
1
t test on data frame
Hi,
I have constructed a dataframe as follows:
Oil <- rep(c("Oil1","Oil2","Oil3"),8)
Comp <- rep(rep(c("C1","C2"),c(4,4)),3)
Mth <- rep(c("M1","M1","M2","M2"),6)
Meas <- rep(c(1,2),12)
Result <- rnorm(24,mean=100, sd=5)
df <- data.frame(Oil, Comp, Mth, Meas, Result)
The same compound (Comp) is fou...