Frequencies for first 10,000 rows of prov1535 variable in pos1991 dataset :

  organized |
     family |
      group |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,078       70.78       70.78
          N |      2,075       20.75       91.53
          Y |        847        8.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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