Stata Summarize If. When this default is used the sum of the weights will equal the number of observations. Summarize with complex if specifying records to summarize.
By varlist summarize varlist in range if exp options. Summarize calculates and displays a variety of univariate summary statistics. Typing summarize age if age 21 on the other hand summarizes all the observations on age that are greater than 21.
Summarize if rep78 less than or equal to 2.
Tabulate category summarize myvar means standard. By varlist summarize varlist in range if exp options. By default each case i e subject is given a weight of 1. Putting age after sum tells it to only give you summary statistics for the age variable.