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  1. or download this
    %HoA = (
    A => [2.34, 4.12, 5.32],
...
    C => [8.42, 0.23, 0.45, 6.43],
###...and so on
);
  2. or download this
    A   3.93
B   4.79
...etc.
  3. or download this
    my $average;
foreach my $key (keys %HoA) {
...
    my $av =  $sum/$count;
    return $av; 
}