Statistics::Basic::Mean - find the mean of a list

       Paul Miller "<jettero@cpan.org>"

       Copyright 2012 Paul Miller -- Licensed under the LGPL

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

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

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

       Statistics::Basic::Mean - find the mean of a list

       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).

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

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

       Invoke it this way:

           my $avg = mean(1,2,3);

       Or this way:

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

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

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

       Create a 20 point moving average like so:

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

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

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

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

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