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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,845       58.45       58.45
          1 |         65        0.65       59.10
          2 |         98        0.98       60.08
          3 |         85        0.85       60.93
          4 |         85        0.85       61.78
          5 |         93        0.93       62.71
          6 |         77        0.77       63.48
          7 |        100        1.00       64.48
          8 |        123        1.23       65.71
          9 |        156        1.56       67.27
         10 |        130        1.30       68.57
         11 |        163        1.63       70.20
         12 |        183        1.83       72.03
         13 |        161        1.61       73.64
         14 |        187        1.87       75.51
         15 |        178        1.78       77.29
         16 |        176        1.76       79.05
         17 |        215        2.15       81.20
         18 |        189        1.89       83.09
         19 |        194        1.94       85.03
         20 |        185        1.85       86.88
         21 |        147        1.47       88.35
         22 |        153        1.53       89.88
         23 |        146        1.46       91.34
         24 |        126        1.26       92.60
         25 |        131        1.31       93.91
         26 |         92        0.92       94.83
         27 |         93        0.93       95.76
         28 |         71        0.71       96.47
         29 |         62        0.62       97.09
         30 |         55        0.55       97.64
         31 |         34        0.34       97.98
         32 |         37        0.37       98.35
         33 |         29        0.29       98.64
         34 |         21        0.21       98.85
         35 |         23        0.23       99.08
         36 |         20        0.20       99.28
         37 |         13        0.13       99.41
         38 |          8        0.08       99.49
         39 |         11        0.11       99.60
         40 |          9        0.09       99.69
         41 |          9        0.09       99.78
         42 |          4        0.04       99.82
         43 |          1        0.01       99.83
         44 |          2        0.02       99.85
         45 |          2        0.02       99.87
         46 |          2        0.02       99.89
         47 |          3        0.03       99.92
         48 |          1        0.01       99.93
         50 |          1        0.01       99.94
         52 |          1        0.01       99.95
         53 |          1        0.01       99.96
         55 |          2        0.02       99.98
         61 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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