The problem has already been solved, but if your lab is on fire and you need a one-liner to get you a quick answer: 
perl -MList::Util=sum -E '<>; say sum( map{ (split /\t/)[-1] } <>);' f
+ile.tsv

[download]

In reply to Re: average of column by frozenwithjoy
in thread average of column by linseyr

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