stats_covariance(3) php man page | unix.com

STATS_COVARIANCE(3)							 1						       STATS_COVARIANCE(3)

stats_covariance - Computes the covariance of two data sets

SYNOPSIS
       float stats_covariance (array  $a, array  $b)

DESCRIPTION
       Warning

	      This function is currently not documented; only its argument list is available.

PARAMETERS
	      o $a
		-

	      o $b
		-

RETURN VALUES
PHP Documentation Group 												       STATS_COVARIANCE(3)