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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,519       55.19       55.19
          1 |         48        0.48       55.67
          2 |         88        0.88       56.55
          3 |         84        0.84       57.39
          4 |         88        0.88       58.27
          5 |         82        0.82       59.09
          6 |         97        0.97       60.06
          7 |        100        1.00       61.06
          8 |        130        1.30       62.36
          9 |        128        1.28       63.64
         10 |        162        1.62       65.26
         11 |        165        1.65       66.91
         12 |        170        1.70       68.61
         13 |        202        2.02       70.63
         14 |        177        1.77       72.40
         15 |        196        1.96       74.36
         16 |        227        2.27       76.63
         17 |        198        1.98       78.61
         18 |        197        1.97       80.58
         19 |        205        2.05       82.63
         20 |        198        1.98       84.61
         21 |        160        1.60       86.21
         22 |        177        1.77       87.98
         23 |        151        1.51       89.49
         24 |        158        1.58       91.07
         25 |        137        1.37       92.44
         26 |        100        1.00       93.44
         27 |         98        0.98       94.42
         28 |         78        0.78       95.20
         29 |         88        0.88       96.08
         30 |         64        0.64       96.72
         31 |         42        0.42       97.14
         32 |         55        0.55       97.69
         33 |         50        0.50       98.19
         34 |         32        0.32       98.51
         35 |         26        0.26       98.77
         36 |         26        0.26       99.03
         37 |         17        0.17       99.20
         38 |         15        0.15       99.35
         39 |         10        0.10       99.45
         40 |         16        0.16       99.61
         41 |         13        0.13       99.74
         42 |          6        0.06       99.80
         43 |          1        0.01       99.81
         44 |          6        0.06       99.87
         45 |          6        0.06       99.93
         46 |          2        0.02       99.95
         47 |          1        0.01       99.96
         50 |          1        0.01       99.97
         56 |          1        0.01       99.98
         67 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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