The MIDRANGE (middle range) function returns a numeric value that is the arithmetic mean (average) of the values of the minimum argument and the maximum argument. The type of this function is numeric.
Usage
FUNCTION MIDRANGE ({argument-1} ... )
Parameters
Argument-1 must be class numeric.
Returned Values
The returned value is the arithmetic mean of the greatest argument-1 value and the least argument-1 value. The comparisons used to determine the greatest and least values are made according to the rules for simple conditions.