Here is my attempt: 

sub avg {
    return eval '(' . join('+', @{$_[0]}) . ')/' . scalar(@{$_[0]});
}

[download]

Works pretty good over all :)

In reply to Re: "Junkyard" Puzzle: Average of Numbers by DrZaius
in thread "Junkyard" Puzzle: Average of Numbers by Masem

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