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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,315       43.15       43.15
          1 |         53        0.53       43.68
          2 |         82        0.82       44.50
          3 |         92        0.92       45.42
          4 |         81        0.81       46.23
          5 |        139        1.39       47.62
          6 |        121        1.21       48.83
          7 |        147        1.47       50.30
          8 |        163        1.63       51.93
          9 |        184        1.84       53.77
         10 |        186        1.86       55.63
         11 |        225        2.25       57.88
         12 |        234        2.34       60.22
         13 |        265        2.65       62.87
         14 |        237        2.37       65.24
         15 |        248        2.48       67.72
         16 |        300        3.00       70.72
         17 |        293        2.93       73.65
         18 |        296        2.96       76.61
         19 |        274        2.74       79.35
         20 |        254        2.54       81.89
         21 |        256        2.56       84.45
         22 |        230        2.30       86.75
         23 |        187        1.87       88.62
         24 |        169        1.69       90.31
         25 |        164        1.64       91.95
         26 |        142        1.42       93.37
         27 |        116        1.16       94.53
         28 |        110        1.10       95.63
         29 |         83        0.83       96.46
         30 |         58        0.58       97.04
         31 |         66        0.66       97.70
         32 |         36        0.36       98.06
         33 |         35        0.35       98.41
         34 |         26        0.26       98.67
         35 |         32        0.32       98.99
         36 |         12        0.12       99.11
         37 |         10        0.10       99.21
         38 |         16        0.16       99.37
         39 |          7        0.07       99.44
         40 |          7        0.07       99.51
         41 |          9        0.09       99.60
         42 |         11        0.11       99.71
         43 |          2        0.02       99.73
         44 |          7        0.07       99.80
         45 |          4        0.04       99.84
         46 |          3        0.03       99.87
         47 |          2        0.02       99.89
         48 |          3        0.03       99.92
         50 |          1        0.01       99.93
         51 |          1        0.01       99.94
         52 |          2        0.02       99.96
         53 |          1        0.01       99.97
         56 |          2        0.02       99.99
         58 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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