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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,106       61.06       61.06
          1 |         47        0.47       61.53
          2 |         73        0.73       62.26
          3 |         86        0.86       63.12
          4 |         80        0.80       63.92
          5 |         78        0.78       64.70
          6 |         98        0.98       65.68
          7 |         94        0.94       66.62
          8 |        133        1.33       67.95
          9 |        127        1.27       69.22
         10 |        133        1.33       70.55
         11 |        141        1.41       71.96
         12 |        148        1.48       73.44
         13 |        156        1.56       75.00
         14 |        158        1.58       76.58
         15 |        188        1.88       78.46
         16 |        173        1.73       80.19
         17 |        151        1.51       81.70
         18 |        165        1.65       83.35
         19 |        175        1.75       85.10
         20 |        162        1.62       86.72
         21 |        128        1.28       88.00
         22 |        136        1.36       89.36
         23 |        169        1.69       91.05
         24 |        111        1.11       92.16
         25 |         99        0.99       93.15
         26 |        102        1.02       94.17
         27 |         98        0.98       95.15
         28 |         77        0.77       95.92
         29 |         56        0.56       96.48
         30 |         54        0.54       97.02
         31 |         37        0.37       97.39
         32 |         44        0.44       97.83
         33 |         39        0.39       98.22
         34 |         22        0.22       98.44
         35 |         38        0.38       98.82
         36 |         19        0.19       99.01
         37 |         10        0.10       99.11
         38 |         20        0.20       99.31
         39 |         12        0.12       99.43
         40 |         14        0.14       99.57
         41 |         10        0.10       99.67
         42 |          4        0.04       99.71
         43 |          5        0.05       99.76
         44 |          3        0.03       99.79
         45 |          7        0.07       99.86
         46 |          5        0.05       99.91
         47 |          3        0.03       99.94
         48 |          1        0.01       99.95
         49 |          2        0.02       99.97
         50 |          1        0.01       99.98
         55 |          1        0.01       99.99
         56 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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