print_r($s->calcBasic());
echo "\n*** A data set with nulls\n";
print_r($dnulls);
echo "Let's generate an error\n";
try {
print_r($s->setData($dnulls));
} catch (\Exception $e) {
echo "\n\t Exception: " . $e->getMessage() . "\n\n";
}
echo "Ignoring nulls and trying again\n";
$s->setNullOption(\PEAR\Math\Stats::STATS_IGNORE_NULL);
$s->setData($dnulls);
echo "---> data after ignoring (removing) nulls\n";
print_r($s->getData());
echo "---> stats\n";
try {
print_r($s->calcBasic());
} catch (\Exception $e) {
echo "\n\t Exception: " . $e->getMessage() . "\n\n";
}
echo "Assuming nulls are zeros and doing a full stats calculation\n";
$s->setNullOption(\PEAR\Math\Stats::STATS_USE_NULL_AS_ZERO);
$s->setData($dnulls);
echo "---> data after setting nulls to zero\n";
print_r($s->getData());
echo "---> stats\n";
try {
print_r($s->calcFull());
} catch (\Exception $e) {
echo "\n\t Exception: " . $e->getMessage() . "\n\n";
}
<?php
//require_once 'Math/Stats.php';
require_once __DIR__ . '/../../vendor/autoload.php';
$data = array();
$fp = fopen(__DIR__ . "/../../tests/_data/bigcummulativedata.dat", "r");
while ((list($val, $count) = fgetcsv($fp, 80)) !== false) {
$data[$val] = $count;
}
$s = new \PEAR\Math\Stats();
$s->setData($data, \PEAR\Math\Stats::STATS_DATA_CUMMULATIVE);
try {
$stats = $s->calcFull();
//print_r($stats);
echo "Using Math_Stats:\n" . "mean = {$stats['mean']}\n" . "SEmean = {$stats['std_error_of_mean']}\n" . "std dev = {$stats['stdev']}\n" . "quartile(25)) = {$stats['quartiles'][25]}\n" . "median = {$stats['median']}\n" . "quartile(75) = {$stats['quartiles'][75]}\n" . "min = {$stats['min']}\n" . "max = {$stats['max']}\n" . "count = {$stats['count']}\n\n" . "Using SPSS:\n" . "mean = 2.8627\n" . "SEmean = 0.0005\n" . "std dev = 1.0630\n" . "quartile(25) = 2\n" . "median = 3\n" . "quartile(75) = 4\n" . "min = 1\n" . "max = 41\n" . "count = 4255666\n";
//Name,Mean,SEMean,StDev,Q1,Median,Q3,Min,Max,N
//SPSS,2.8627,0.0005,1.0630,2,3,4,1,41,4255666
} catch (\Exception $e) {
echo "\n\t Exception: " . $e->getMessage() . "\n\n";
}