install Statistics::Basic::Median
Statistics::Basic::Median is up to date (undef).

install Statistics::Basic::StdDev
Statistics::Basic::StdDev is up to date (undef).

##</code><code>##

use Statistics::Basic::StdDev;
my $stddev = stddev(1,2,3);
print $stddev."\n";

##</code><code>##

Undefined subroutine &main::stddev called at test.pl line 2.