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use t::locale_hack;
use strict;
use Test;
use Statistics::Basic;
plan tests => 5;
PART1: {
my $stddev = new Statistics::Basic::StdDev([0, 2, 3, 4]);
ok( $stddev->query == sqrt( 35/16 ) );
$stddev->insert(7);
ok( $stddev->query == sqrt( 14/4 ) );
$stddev->set_vector([2, 3]);
ok( $stddev->query == sqrt( 1/4 ) );
$stddev->ginsert( 7 );
ok( $stddev->query == sqrt( 14/3 ) );
}
PART2: {
my $stddev = new Statistics::Basic::StdDev;
$stddev->set_vector([2, 3]);
ok( $stddev->query == sqrt( 1/4 ) );
}
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