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Statistics::Basic::Median - find the median of a list

Author

       Paul Miller "<jettero@cpan.org>"

Methods

new()
           The  constructor  takes  a  single  array ref or a single Statistics::Basic::Vector as arguments.  It
           returns a Statistics::Basic::Median object.

           Note: normally you'd use the median() constructor, rather than building these by hand using "new()".

       _OVB::import()
           This module also inherits all the overloads and methods from Statistics::Basic::_OneVectorBase.

Name

       Statistics::Basic::Median - find the median of a list

Overloads

       This object is overloaded.  It tries to return an appropriate string for the calculation or the value  of
       the computation in numeric context.

       In boolean context, this object is always true (even when empty).

See Also

perl(1), Statistics::Basic, Statistics::Basic::_OneVectorBase, Statistics::Basic::Vector

perl v5.36.0                                       2022-11-19                     Statistics::Basic::Median(3pm)

Synopsis

       Invoke it this way:

           my $median = median(1,2,3);

       Or this way:

           my $v1  = vector(1,2,3);
           my $med = median($v1);

       And then either query the values or print them like so:

           print "The median of $v1: $med\n";
           my $mq = $med->query;
           my $m0 = 0+$med;

       Create a 20 point "moving" median like so:

           use Statistics::Basic qw(:all nofill);

           my $sth = $dbh->prepare("select col1 from data where something");
           my $len = 20;
           my $med = median()->set_size($len);

           $sth->execute or die $dbh->errstr;
           $sth->bind_columns( my $val ) or die $dbh->errstr;

           while( $sth->fetch ) {
               $med->insert( $val );
               if( defined( $m = $med->query ) ) {
                   print "Median: $m\n";
               }

               # This would also work:
               # print "Median: $med\n" if $med->query_filled;
           }

See Also