03-17-2014
The code snippet by anbu23 is working fine. I guess that sth in the context (some lines up/down) has been messed up. Please post those lines, eventually hiding/modifying classified portions.
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LEARN ABOUT DEBIAN
statistics::basic::mean
Statistics::Basic::Mean(3pm) User Contributed Perl Documentation Statistics::Basic::Mean(3pm)
NAME
Statistics::Basic::Mean - find the mean of a list
SYNOPSIS
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
";
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
";
}
# This would also work:
# print "Mean: $avg
" if $avg->query_filled;
}
METHODS
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.
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).
AUTHOR
Paul Miller "<jettero@cpan.org>"
COPYRIGHT
Copyright 2012 Paul Miller -- Licensed under the LGPL
SEE ALSO
perl(1), Statistics::Basic, Statistics::Basic::_OneVectorBase, Statistics::Basic::Vector
perl v5.14.2 2012-01-23 Statistics::Basic::Mean(3pm)