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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,979       59.79       59.79
          1 |         62        0.62       60.41
          2 |         73        0.73       61.14
          3 |         59        0.59       61.73
          4 |         72        0.72       62.45
          5 |         71        0.71       63.16
          6 |         71        0.71       63.87
          7 |        105        1.05       64.92
          8 |        100        1.00       65.92
          9 |        100        1.00       66.92
         10 |        110        1.10       68.02
         11 |        169        1.69       69.71
         12 |        140        1.40       71.11
         13 |        170        1.70       72.81
         14 |        188        1.88       74.69
         15 |        185        1.85       76.54
         16 |        182        1.82       78.36
         17 |        185        1.85       80.21
         18 |        194        1.94       82.15
         19 |        196        1.96       84.11
         20 |        191        1.91       86.02
         21 |        175        1.75       87.77
         22 |        167        1.67       89.44
         23 |        131        1.31       90.75
         24 |        145        1.45       92.20
         25 |        126        1.26       93.46
         26 |        113        1.13       94.59
         27 |         80        0.80       95.39
         28 |         79        0.79       96.18
         29 |         59        0.59       96.77
         30 |         66        0.66       97.43
         31 |         46        0.46       97.89
         32 |         34        0.34       98.23
         33 |         36        0.36       98.59
         34 |         19        0.19       98.78
         35 |         27        0.27       99.05
         36 |         23        0.23       99.28
         37 |         14        0.14       99.42
         38 |          6        0.06       99.48
         39 |          6        0.06       99.54
         40 |         13        0.13       99.67
         41 |          4        0.04       99.71
         42 |          6        0.06       99.77
         43 |          5        0.05       99.82
         44 |          7        0.07       99.89
         47 |          1        0.01       99.90
         48 |          2        0.02       99.92
         50 |          1        0.01       99.93
         55 |          1        0.01       99.94
         59 |          1        0.01       99.95
         67 |          1        0.01       99.96
         68 |          1        0.01       99.97
         79 |          1        0.01       99.98
         94 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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