Frequencies for first 10,000 rows of a4 variable in miacc dataset :

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,949       59.49       59.49
          1 |         60        0.60       60.09
          2 |         90        0.90       60.99
          3 |         85        0.85       61.84
          4 |         87        0.87       62.71
          5 |         94        0.94       63.65
          6 |         82        0.82       64.47
          7 |         78        0.78       65.25
          8 |        106        1.06       66.31
          9 |        116        1.16       67.47
         10 |        118        1.18       68.65
         11 |        120        1.20       69.85
         12 |        145        1.45       71.30
         13 |        136        1.36       72.66
         14 |        168        1.68       74.34
         15 |        188        1.88       76.22
         16 |        179        1.79       78.01
         17 |        175        1.75       79.76
         18 |        193        1.93       81.69
         19 |        203        2.03       83.72
         20 |        165        1.65       85.37
         21 |        182        1.82       87.19
         22 |        157        1.57       88.76
         23 |        159        1.59       90.35
         24 |        142        1.42       91.77
         25 |        128        1.28       93.05
         26 |         88        0.88       93.93
         27 |         91        0.91       94.84
         28 |         95        0.95       95.79
         29 |         73        0.73       96.52
         30 |         67        0.67       97.19
         31 |         56        0.56       97.75
         32 |         36        0.36       98.11
         33 |         31        0.31       98.42
         34 |         27        0.27       98.69
         35 |         28        0.28       98.97
         36 |         17        0.17       99.14
         37 |         15        0.15       99.29
         38 |          9        0.09       99.38
         39 |         15        0.15       99.53
         40 |          5        0.05       99.58
         41 |         10        0.10       99.68
         42 |          5        0.05       99.73
         43 |          8        0.08       99.81
         44 |          1        0.01       99.82
         45 |          4        0.04       99.86
         46 |          1        0.01       99.87
         47 |          4        0.04       99.91
         48 |          1        0.01       99.92
         51 |          2        0.02       99.94
         53 |          1        0.01       99.95
         54 |          1        0.01       99.96
         58 |          1        0.01       99.97
         60 |          1        0.01       99.98
         62 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016