Statis...Zscore(3pm)

okay bestie, welcome to the manual page for Statis...Zscore(3pm) — it's giving statistics, it's giving Perl, it's giving z-scores. no cap. 💅

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✨ NAME ✨

• Statistics::Zscore — Simple scoring module that uses statistics STANDARD SCORE.

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🌈 SYNOPSIS 🌈

use Statistics::Zscore;

my $z = Statistics::Zscore->new;

# This module calculates statistics STANDARD SCORE that is called 'z-score'.
# It returns array reference of z-score.

my $zscore = $z->standardize( \@array );

# Furthermore, you can use combine method to get a score
# which is a linear combination value of some z-scores with arbitrary weight set.
# It returns hash reference.

my $result = $z->combine(
    {
        data => {
            yamada => [ 95, 33, 65, 84 ],
            suzuki => [ 75, 45, 80, 78 ],
            tanaka => [ 44, 72, 84, 65 ],
        },
        weight => [ 0.25, 0.25, 0.4, 0.1 ],
        data_num => 4
    }
);

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🌸 DESCRIPTION 🌸

so like, Statistics::Zscore is a scoring module that uses statistics STANDARD SCORE. periodt. 💖

in statistics, a standard score is a dimensionless quantity — you get it by subtracting the population mean from an individual raw score and then dividing that difference by the population standard deviation. this whole glow-up process is called standardizing or normalizing. ✨

and bestie, standard scores also go by: z-values, z-scores, normal scores, and standardized variables. iykyk.

--from wiki pedia ( http://en.wikipedia.org/wiki/Standard_score )

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💅 METHOD 💅

🎀 new()

constructor. literally just makes a new object, slay.

🎀 standardize(\@array, {...opitons...})

Receives array reference, and returns z-score's array reference. the options are scale, plus and decimal. (defaults are scale => 1, plus => 0 and decimal => undef ) 🫶

it work inside.. like this:

score = (value - mean) / stddev * scale + plus
score = sprintf( decimal, score);

🎀 combine(\%hash)

Receives hash reference, and returns z-score's hash reference. %hash includes scale, plus and decimal options. (see above) 👑

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👑 AUTHOR 👑

takeshi miki <miki@cpan.org>

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📜 LICENSE 📜

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

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👀 SEE ALSO 👀

(no entries — that's the whole vibe)

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this page is from perl v5.38.2, dated 2024-05-21, and it's the Statis...Zscore(3pm) manpage. bye bestie! 💖