Frequencies for first 10,000 rows of a3 variable in miacc dataset :

         a3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,007       60.07       60.07
          1 |         59        0.59       60.66
          2 |         76        0.76       61.42
          3 |         72        0.72       62.14
          4 |         77        0.77       62.91
          5 |         85        0.85       63.76
          6 |         97        0.97       64.73
          7 |         96        0.96       65.69
          8 |        132        1.32       67.01
          9 |        133        1.33       68.34
         10 |        126        1.26       69.60
         11 |        173        1.73       71.33
         12 |        177        1.77       73.10
         13 |        156        1.56       74.66
         14 |        181        1.81       76.47
         15 |        184        1.84       78.31
         16 |        165        1.65       79.96
         17 |        175        1.75       81.71
         18 |        199        1.99       83.70
         19 |        198        1.98       85.68
         20 |        184        1.84       87.52
         21 |        158        1.58       89.10
         22 |        135        1.35       90.45
         23 |        135        1.35       91.80
         24 |        118        1.18       92.98
         25 |         85        0.85       93.83
         26 |         90        0.90       94.73
         27 |         84        0.84       95.57
         28 |         66        0.66       96.23
         29 |         69        0.69       96.92
         30 |         54        0.54       97.46
         31 |         37        0.37       97.83
         32 |         40        0.40       98.23
         33 |         45        0.45       98.68
         34 |         26        0.26       98.94
         35 |         30        0.30       99.24
         36 |         12        0.12       99.36
         37 |          8        0.08       99.44
         38 |         13        0.13       99.57
         39 |          9        0.09       99.66
         40 |          7        0.07       99.73
         41 |          3        0.03       99.76
         42 |          3        0.03       99.79
         43 |          5        0.05       99.84
         44 |          4        0.04       99.88
         45 |          2        0.02       99.90
         46 |          4        0.04       99.94
         48 |          2        0.02       99.96
         49 |          1        0.01       99.97
         51 |          1        0.01       99.98
         53 |          1        0.01       99.99
         55 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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