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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,864       58.64       58.64
          1 |         66        0.66       59.30
          2 |         79        0.79       60.09
          3 |         91        0.91       61.00
          4 |        105        1.05       62.05
          5 |         89        0.89       62.94
          6 |         91        0.91       63.85
          7 |        103        1.03       64.88
          8 |        129        1.29       66.17
          9 |        132        1.32       67.49
         10 |        142        1.42       68.91
         11 |        153        1.53       70.44
         12 |        161        1.61       72.05
         13 |        172        1.72       73.77
         14 |        150        1.50       75.27
         15 |        210        2.10       77.37
         16 |        201        2.01       79.38
         17 |        165        1.65       81.03
         18 |        183        1.83       82.86
         19 |        182        1.82       84.68
         20 |        174        1.74       86.42
         21 |        177        1.77       88.19
         22 |        171        1.71       89.90
         23 |        148        1.48       91.38
         24 |        116        1.16       92.54
         25 |        116        1.16       93.70
         26 |        106        1.06       94.76
         27 |         96        0.96       95.72
         28 |         75        0.75       96.47
         29 |         59        0.59       97.06
         30 |         43        0.43       97.49
         31 |         44        0.44       97.93
         32 |         37        0.37       98.30
         33 |         23        0.23       98.53
         34 |         24        0.24       98.77
         35 |         23        0.23       99.00
         36 |         15        0.15       99.15
         37 |         14        0.14       99.29
         38 |         23        0.23       99.52
         39 |         13        0.13       99.65
         40 |          5        0.05       99.70
         41 |          6        0.06       99.76
         42 |          4        0.04       99.80
         43 |          5        0.05       99.85
         44 |          2        0.02       99.87
         45 |          3        0.03       99.90
         46 |          1        0.01       99.91
         47 |          1        0.01       99.92
         49 |          2        0.02       99.94
         52 |          1        0.01       99.95
         54 |          1        0.01       99.96
         56 |          1        0.01       99.97
         57 |          1        0.01       99.98
         61 |          1        0.01       99.99
         89 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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