Frequencies for first 10,000 rows of drink variable in natl1997 dataset :

    Average |
  Number of |
 Drinks Per |
       Week |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,922       99.22       99.22
          1 |         25        0.25       99.47
          2 |          6        0.06       99.53
          3 |          2        0.02       99.55
          4 |          3        0.03       99.58
          6 |          2        0.02       99.60
          7 |          1        0.01       99.61
         99 |         39        0.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015