Frequencies for first 10,000 rows of prov1380 variable in pos1993 dataset :

technicians |
-aa plus 60 |
 credit hrs |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,902       99.02       99.02
          1 |         42        0.42       99.44
          2 |         23        0.23       99.67
          3 |          8        0.08       99.75
          4 |          8        0.08       99.83
          5 |          6        0.06       99.89
          6 |          1        0.01       99.90
          7 |          3        0.03       99.93
          9 |          1        0.01       99.94
         14 |          1        0.01       99.95
         15 |          2        0.02       99.97
         29 |          1        0.01       99.98
         32 |          1        0.01       99.99
         37 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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