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\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;
}
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).