Question

I’m dealing with a Perl script. Perl is quite new to me.
Does anybody have an idea what this code does?

$pval = sprintf("%0.1e", Statistics::Distributions::uprob($z));     

Where :

my $z= ($all{key} - $mu) / ${sigma};

Answer 1

$pval is assigned a formatted string in the shape of a floating-point number in scientific notation. Presumably the function uprob from the Statistics module returns such a number.

$z is passed as argument to that function, and it seems to be a number calculated from a value in the hash %all with the key key, minus $mu, divided by $sigma. Pretty straightforward.