Frequencies for first 10,000 rows of cigar variable in natl1991 dataset :

    Average |
  Number of |
 Cigarettes |
    Per Day |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,342       83.42       83.42
          1 |         28        0.28       83.70
          2 |         59        0.59       84.29
          3 |         57        0.57       84.86
          4 |         50        0.50       85.36
          5 |        123        1.23       86.59
          6 |         50        0.50       87.09
          7 |         19        0.19       87.28
          8 |         27        0.27       87.55
          9 |          6        0.06       87.61
         10 |        508        5.08       92.69
         11 |          1        0.01       92.70
         12 |         15        0.15       92.85
         13 |          2        0.02       92.87
         15 |         45        0.45       93.32
         17 |          1        0.01       93.33
         18 |          1        0.01       93.34
         20 |        480        4.80       98.14
         25 |          7        0.07       98.21
         30 |         48        0.48       98.69
         35 |          2        0.02       98.71
         40 |         39        0.39       99.10
         41 |          1        0.01       99.11
         50 |          2        0.02       99.13
         99 |         87        0.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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