Frequencies for first 10,000 rows of prov3810 variable in posclia2001 dataset :

   prov3810 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        336        3.36        3.36
          1 |      1,408       14.08       17.44
          2 |      4,703       47.03       64.47
          3 |        865        8.65       73.12
          4 |      2,080       20.80       93.92
          9 |        608        6.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016