stats_covariance
(PECL stats >= 1.0.0)
stats_covariance — Computes the covariance of two data sets
Description
   float stats_covariance
    ( array $a
   , array $b
   )
  Warning
 This function is currently not documented; only its argument list is available.
Parameters
- a
- 
      
- b
- 
      
Return Values