NAME

Statistics::Associations - Calculates Association Coefficients of Nominal Scale.

SYNOPSIS

            

              
              
use Statistics::Associations;
my $asso = Statistics::Associations->new;
# Basic Methods
# calculates coefficients
my $matrix = [ [ 6, 4 ], [ 5, 5 ] ];
my $phi         = $asso->phi($matrix);
my $contingency = $asso->contingency($matrix);
my $cramer      = $asso->cramer($matrix);
# -------------------
# Helper Methods
# it helps you to making matrix
while(<STDIN>){
    my $row_label = ...;
    my $col_label = ...;
    my $value = ...;
    $asso->make_matrix( $row_label, $col_label, $value );
}
my $matrix = $asso->matrix;
# convert to hash_ref
my $hash_ref = $asso->convert_hashref;
            
          

DESCRIPTION

Statistics::Associations is a calculator of Association Coefficients that specialized in 'Nominal Scale'.

It calculates next three coeffients.

            

              
              
* phi
* contingency
* cramer
            
          

And it calculates chi-square, too.

And then, it helps you to making matrix in a loop that looks like parsing logs.

METHODS

new

phi( $matrix )

contingency( $matrix )

cramer( $matrix )

chisq( $matrix )

make_matrix( $row_label, $col_label, [$value] )

matrix()

convert_hashref()

AUTHOR

takeshi miki <miki@cpan.org>

LICENSE

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

SEE ALSO