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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,976       59.76       59.76
          1 |         44        0.44       60.20
          2 |         83        0.83       61.03
          3 |         84        0.84       61.87
          4 |         92        0.92       62.79
          5 |         84        0.84       63.63
          6 |         85        0.85       64.48
          7 |         82        0.82       65.30
          8 |        111        1.11       66.41
          9 |        111        1.11       67.52
         10 |        131        1.31       68.83
         11 |        115        1.15       69.98
         12 |        144        1.44       71.42
         13 |        157        1.57       72.99
         14 |        170        1.70       74.69
         15 |        185        1.85       76.54
         16 |        165        1.65       78.19
         17 |        181        1.81       80.00
         18 |        188        1.88       81.88
         19 |        173        1.73       83.61
         20 |        171        1.71       85.32
         21 |        161        1.61       86.93
         22 |        151        1.51       88.44
         23 |        150        1.50       89.94
         24 |        142        1.42       91.36
         25 |        112        1.12       92.48
         26 |        129        1.29       93.77
         27 |        113        1.13       94.90
         28 |         78        0.78       95.68
         29 |         47        0.47       96.15
         30 |         51        0.51       96.66
         31 |         40        0.40       97.06
         32 |         49        0.49       97.55
         33 |         44        0.44       97.99
         34 |         35        0.35       98.34
         35 |         32        0.32       98.66
         36 |         26        0.26       98.92
         37 |         23        0.23       99.15
         38 |         15        0.15       99.30
         39 |         15        0.15       99.45
         40 |         15        0.15       99.60
         41 |         10        0.10       99.70
         42 |          2        0.02       99.72
         43 |          6        0.06       99.78
         44 |          4        0.04       99.82
         45 |          3        0.03       99.85
         46 |          2        0.02       99.87
         48 |          1        0.01       99.88
         49 |          1        0.01       99.89
         50 |          2        0.02       99.91
         51 |          1        0.01       99.92
         52 |          1        0.01       99.93
         61 |          1        0.01       99.94
         63 |          1        0.01       99.95
         64 |          2        0.02       99.97
         66 |          1        0.01       99.98
         73 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016