random variable

syn. variate 

Quantity which may take any of the values of a specified set with a specified relative frequency or probability; to be regarded as defined, not merely by a set of permissible values like an ordinary mathematical variable but by an associated frequency (probability) function. (DST)

 

Source:

UNESCO/WMO International Glossary of Hydrology (2nd revised ed., 1992)

Posted on February 24, 2014 .