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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,181       61.81       61.81
          1 |         54        0.54       62.35
          2 |         85        0.85       63.20
          3 |         83        0.83       64.03
          4 |         66        0.66       64.69
          5 |         70        0.70       65.39
          6 |         79        0.79       66.18
          7 |         97        0.97       67.15
          8 |        113        1.13       68.28
          9 |        130        1.30       69.58
         10 |        123        1.23       70.81
         11 |        149        1.49       72.30
         12 |        150        1.50       73.80
         13 |        161        1.61       75.41
         14 |        150        1.50       76.91
         15 |        174        1.74       78.65
         16 |        178        1.78       80.43
         17 |        172        1.72       82.15
         18 |        167        1.67       83.82
         19 |        144        1.44       85.26
         20 |        146        1.46       86.72
         21 |        174        1.74       88.46
         22 |        149        1.49       89.95
         23 |        132        1.32       91.27
         24 |        121        1.21       92.48
         25 |        103        1.03       93.51
         26 |        109        1.09       94.60
         27 |         83        0.83       95.43
         28 |         73        0.73       96.16
         29 |         68        0.68       96.84
         30 |         54        0.54       97.38
         31 |         47        0.47       97.85
         32 |         46        0.46       98.31
         33 |         20        0.20       98.51
         34 |         26        0.26       98.77
         35 |         17        0.17       98.94
         36 |         28        0.28       99.22
         37 |         15        0.15       99.37
         38 |         12        0.12       99.49
         39 |         13        0.13       99.62
         40 |          6        0.06       99.68
         41 |          7        0.07       99.75
         42 |          6        0.06       99.81
         43 |          4        0.04       99.85
         44 |          2        0.02       99.87
         45 |          2        0.02       99.89
         46 |          2        0.02       99.91
         47 |          2        0.02       99.93
         48 |          1        0.01       99.94
         49 |          3        0.03       99.97
         50 |          1        0.01       99.98
         51 |          1        0.01       99.99
         54 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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