1Statistics::Basic::MeanU(s3e)r Contributed Perl DocumentaSttiaotnistics::Basic::Mean(3)
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NAME

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

9       Invoke it this way:
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11           my $avg = mean(1,2,3);
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13       Or this way:
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15           my $v1  = vector(1,2,3);
16           my $avg = avg($v1);
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18       And then either query the values or print them like so:
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20           print "The mean of $v1: $avg\n";
21           my $mq = $avg->query;
22           my $m0 = 0+$avg;
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24       Create a 20 point moving average like so:
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26           use Statistics::Basic qw(:all nofill);
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28           my $sth = $dbh->prepare("select col1 from data where something");
29           my $len = 20;
30           my $avg = mean()->set_size($len);
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32           $sth->execute or die $dbh->errstr;
33           $sth->bind_columns( my $val ) or die $dbh->errstr;
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35           while( $sth->fetch ) {
36               $avg->insert( $val );
37               if( defined( my $m = $avg->query ) ) {
38                   print "Mean: $m\n";
39               }
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41               # This would also work:
42               # print "Mean: $avg\n" if $avg->query_filled;
43           }
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METHODS

46       new()
47           The constructor takes a single array ref or a single
48           Statistics::Basic::Vector as arguments.  It returns a
49           Statistics::Basic::Mean object.
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51           Note: normally you'd use the mean() constructor, rather than
52           building these by hand using "new()".
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54       _OVB::import()
55           This module also inherits all the overloads and methods from
56           Statistics::Basic::_OneVectorBase.
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OVERLOADS

59       This object is overloaded.  It tries to return an appropriate string
60       for the calculation or the value of the computation in numeric context.
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62       In boolean context, this object is always true (even when empty).
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AUTHOR

65       Paul Miller "<jettero@cpan.org>"
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68       Copyright 2012 Paul Miller -- Licensed under the LGPL
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SEE ALSO

71       perl(1), Statistics::Basic, Statistics::Basic::_OneVectorBase,
72       Statistics::Basic::Vector
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76perl v5.30.0                      2019-07-26        Statistics::Basic::Mean(3)
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