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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,786       57.86       57.86
          1 |         44        0.44       58.30
          2 |         85        0.85       59.15
          3 |         80        0.80       59.95
          4 |         65        0.65       60.60
          5 |         82        0.82       61.42
          6 |        107        1.07       62.49
          7 |        110        1.10       63.59
          8 |        128        1.28       64.87
          9 |        125        1.25       66.12
         10 |        170        1.70       67.82
         11 |        157        1.57       69.39
         12 |        159        1.59       70.98
         13 |        159        1.59       72.57
         14 |        167        1.67       74.24
         15 |        172        1.72       75.96
         16 |        180        1.80       77.76
         17 |        191        1.91       79.67
         18 |        198        1.98       81.65
         19 |        179        1.79       83.44
         20 |        172        1.72       85.16
         21 |        200        2.00       87.16
         22 |        182        1.82       88.98
         23 |        149        1.49       90.47
         24 |        125        1.25       91.72
         25 |        106        1.06       92.78
         26 |        100        1.00       93.78
         27 |         99        0.99       94.77
         28 |         97        0.97       95.74
         29 |         52        0.52       96.26
         30 |         72        0.72       96.98
         31 |         46        0.46       97.44
         32 |         46        0.46       97.90
         33 |         37        0.37       98.27
         34 |         27        0.27       98.54
         35 |         26        0.26       98.80
         36 |         20        0.20       99.00
         37 |         16        0.16       99.16
         38 |         21        0.21       99.37
         39 |          8        0.08       99.45
         40 |         14        0.14       99.59
         41 |          4        0.04       99.63
         42 |          9        0.09       99.72
         43 |          7        0.07       99.79
         44 |          3        0.03       99.82
         45 |          1        0.01       99.83
         46 |          2        0.02       99.85
         48 |          4        0.04       99.89
         51 |          2        0.02       99.91
         52 |          1        0.01       99.92
         54 |          1        0.01       99.93
         55 |          2        0.02       99.95
         56 |          1        0.01       99.96
         58 |          1        0.01       99.97
         66 |          1        0.01       99.98
         71 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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