Simplified statistical functions can be called in a COMPUTE command to perform statistical calculations on the internal matrix that is generated during TABLE request processing. The STDDEV and CORRELATION functions can also be called as a verb object in a display command. Prior to calling a statistical function, you need to establish the size of the partition on which these functions will operate, if the request contains sort fields.
Note: It is recommended that all numbers and fields used as parameters to these functions be double-precision.