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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,078       50.78       50.78
          1 |         45        0.45       51.23
          2 |         76        0.76       51.99
          3 |         98        0.98       52.97
          4 |         82        0.82       53.79
          5 |         94        0.94       54.73
          6 |         99        0.99       55.72
          7 |        121        1.21       56.93
          8 |        122        1.22       58.15
          9 |        162        1.62       59.77
         10 |        183        1.83       61.60
         11 |        174        1.74       63.34
         12 |        176        1.76       65.10
         13 |        181        1.81       66.91
         14 |        221        2.21       69.12
         15 |        209        2.09       71.21
         16 |        257        2.57       73.78
         17 |        241        2.41       76.19
         18 |        250        2.50       78.69
         19 |        206        2.06       80.75
         20 |        234        2.34       83.09
         21 |        198        1.98       85.07
         22 |        189        1.89       86.96
         23 |        171        1.71       88.67
         24 |        167        1.67       90.34
         25 |        138        1.38       91.72
         26 |        155        1.55       93.27
         27 |         93        0.93       94.20
         28 |        102        1.02       95.22
         29 |         83        0.83       96.05
         30 |         69        0.69       96.74
         31 |         63        0.63       97.37
         32 |         40        0.40       97.77
         33 |         33        0.33       98.10
         34 |         32        0.32       98.42
         35 |         20        0.20       98.62
         36 |         26        0.26       98.88
         37 |         21        0.21       99.09
         38 |         14        0.14       99.23
         39 |         17        0.17       99.40
         40 |          9        0.09       99.49
         41 |          9        0.09       99.58
         42 |          1        0.01       99.59
         43 |          8        0.08       99.67
         44 |          5        0.05       99.72
         45 |          9        0.09       99.81
         46 |          5        0.05       99.86
         47 |          3        0.03       99.89
         48 |          2        0.02       99.91
         49 |          2        0.02       99.93
         51 |          1        0.01       99.94
         52 |          1        0.01       99.95
         54 |          1        0.01       99.96
         55 |          1        0.01       99.97
         56 |          1        0.01       99.98
         71 |          1        0.01       99.99
         88 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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