Frequencies for first 10,000 rows of cigar variable in natl2001 dataset :

    Average |
  Number of |
 Cigarettes |
    Per Day |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,741       87.41       87.41
          1 |         40        0.40       87.81
          2 |         65        0.65       88.46
          3 |         86        0.86       89.32
          4 |         50        0.50       89.82
          5 |        111        1.11       90.93
          6 |         42        0.42       91.35
          7 |         21        0.21       91.56
          8 |         30        0.30       91.86
          9 |          9        0.09       91.95
         10 |        426        4.26       96.21
         11 |          3        0.03       96.24
         12 |         18        0.18       96.42
         13 |          4        0.04       96.46
         15 |         46        0.46       96.92
         16 |          1        0.01       96.93
         17 |          1        0.01       96.94
         18 |          2        0.02       96.96
         20 |        243        2.43       99.39
         22 |          2        0.02       99.41
         25 |          2        0.02       99.43
         30 |         22        0.22       99.65
         40 |         10        0.10       99.75
         42 |          1        0.01       99.76
         99 |         24        0.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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