/**
* Returns the moments of the distribution
*
* @param string $moments Which moments to compute. m for mean, v for variance, s for skew, k for kurtosis. Default 'mv'
* @return type array A dictionary containing the first four moments of the distribution
*/
public function stats($moments = 'mv')
{
return $this->calculator->getStats($moments, $this->lambda, $this->k);
}
/**
* Returns the moments of the distribution
*
* @param string $moments Which moments to compute. m for mean, v for variance, s for skew, k for kurtosis. Default 'mv'
* @param float $sigma The scale parameter
* @return type array A dictionary containing the first four moments of the distribution
* @static
*/
public function getStats($moments = 'mv', $sigma = 1)
{
$lambda = $this->convertSigmaToLambda($sigma);
return $this->wei->getStats($moments, $lambda, 2);
}