I have a 94 varibles(sample+proteins+group) and 172 observations in a matrix as:
Sample Protein1 Protein2 ... Protein92 Group
1 1.53 3.325 ... 5.63 0
2 2.32 3.451 ... 6.32 0
.
.
.
103 3.24 4.21 ... 3.53 0
104 3.44 5.22 ... 6.78 1
.
.
.
192 6.75 4.34 ... 6.15 1
Something like this. Some of the sample are in group 0 and some are in group 1. I want to test if there is a differences between group 0 and 1 using a t-test and I want to do it for all the proteins. I was thinking of using an apply but have never used it so I am not sure how to use it. Also the names are not Protein1, protein2... , it is much longer so I would not want to have to write them all.
I also would only like the p-value for each protein in a matrix, something like this:
Protein p-value
Protein1 0.00563
Protein2 0.0640
.
.
Protein92 0.610
Or something simular so that I after can find just the ones with a p-value lower than 0.05/92.
I hope I make sense, have never posted here before. Seems like an easy problem but couldn't find any help.
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