The FREQ statement specifies a numeric variable that contains the frequency of each observation.

Required Argument

variable

specifies a numeric variable whose value represents the frequency of the observation. If you use the FREQ statement, then
the procedure assumes that each observation represents observations, where is the value of variable. If is not an integer, then SAS truncates it. If is less than 1 or is missing, then the procedure does not use that observation to calculate statistics.

The sum of the frequency variable represents the total number of observations.