Frequencies for first 10,000 rows of alc_res variable in person dataset :

    ALCOHOL |
       TEST |
    RESULTS |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,980       19.80       19.80
          1 |         25        0.25       20.05
          2 |         38        0.38       20.43
          3 |         25        0.25       20.68
          4 |         27        0.27       20.95
          5 |         30        0.30       21.25
          6 |         25        0.25       21.50
          7 |         31        0.31       21.81
          8 |         24        0.24       22.05
          9 |         33        0.33       22.38
         10 |         39        0.39       22.77
         11 |         36        0.36       23.13
         12 |         44        0.44       23.57
         13 |         41        0.41       23.98
         14 |         53        0.53       24.51
         15 |         39        0.39       24.90
         16 |         51        0.51       25.41
         17 |         41        0.41       25.82
         18 |         39        0.39       26.21
         19 |         59        0.59       26.80
         20 |         44        0.44       27.24
         21 |         41        0.41       27.65
         22 |         42        0.42       28.07
         23 |         44        0.44       28.51
         24 |         36        0.36       28.87
         25 |         33        0.33       29.20
         26 |         36        0.36       29.56
         27 |         16        0.16       29.72
         28 |         15        0.15       29.87
         29 |         15        0.15       30.02
         30 |         15        0.15       30.17
         31 |         15        0.15       30.32
         32 |         18        0.18       30.50
         33 |          8        0.08       30.58
         34 |          6        0.06       30.64
         35 |          2        0.02       30.66
         36 |          3        0.03       30.69
         37 |          3        0.03       30.72
         38 |          2        0.02       30.74
         39 |          3        0.03       30.77
         40 |          1        0.01       30.78
         41 |          2        0.02       30.80
         44 |          1        0.01       30.81
         45 |          1        0.01       30.82
         67 |          1        0.01       30.83
         95 |         14        0.14       30.97
         96 |      5,588       55.88       86.85
         97 |        246        2.46       89.31
         99 |      1,069       10.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016