stats_variance(3) php man page | unix.com

STATS_VARIANCE(3)							 1							 STATS_VARIANCE(3)

stats_variance - Returns the population variance

SYNOPSIS
       float stats_variance (array  $a, [bool  $sample = false])

DESCRIPTION
       Warning

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

PARAMETERS
	      o $a
		-

	      o $sample
		-

RETURN VALUES
PHP Documentation Group 													 STATS_VARIANCE(3)