Frequencies for first 10,000 rows of schenr variable in morg07 dataset :

  Attending |
        HS, |
college, or |
 university |
  last week |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        902        9.02        9.02
          2 |        628        6.28       15.30
          . |      8,470       84.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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