Frequencies for first 10,000 rows of schenr variable in morg90 dataset :

  Attending |
        HS, |
college, or |
 university |
  last week |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        807        8.07        8.07
          2 |        824        8.24       16.31
          . |      8,369       83.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Mar 2017