Your code computes 4 t-tests, but the results are lost, because you don't do anything with them. Try the following:
info <- read.table(header=TRUE, text="Groups Length Size Diet place
A 2.4048381 0.7474989 1.6573392 334.3273456
A 2.72500485 0.86392165 1.8610832 452.5593152
A 1.396782867 0.533330367 0.8634525 225.5998728
B 1.3888505 0.46478175 0.92406875 189.9576476
B 1.38594795 0.60068945 0.7852585 298.3744962
B 2.53491245 0.95608005 1.5788324 303.9052525")
results <- list()
for (i in 2:4){
results[[i]] <- t.test(info[,i] ~ info$Groups, conf.level = 0.95)
}
print(results)
When interacting with the REPL/console, typing the t.test
function will compute results and return them. The console will print everything that is returned. In scripts that you source
, the t.test
function will return results but they wil not be printed. This is why I put them into a list and printed the list later on.
Btw, I stored your information as info
not as table
. R will deal great with variable names that are also function names, but every now and then you will hava a hard time to read error messages, so avoid naming variables table
or matrix
or c
or df
.