Frequencies for first 10,000 rows of prov0765 variable in pos1991 dataset :

cytotechnol |
ogists-2 yr |
       coll |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,892       98.92       98.92
          1 |         60        0.60       99.52
          2 |         20        0.20       99.72
          3 |         12        0.12       99.84
          4 |          5        0.05       99.89
          6 |          3        0.03       99.92
          7 |          3        0.03       99.95
          9 |          1        0.01       99.96
         10 |          1        0.01       99.97
         11 |          1        0.01       99.98
         12 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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