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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,810       58.10       58.10
          1 |         54        0.54       58.64
          2 |         82        0.82       59.46
          3 |         80        0.80       60.26
          4 |         84        0.84       61.10
          5 |         93        0.93       62.03
          6 |        114        1.14       63.17
          7 |        104        1.04       64.21
          8 |        115        1.15       65.36
          9 |        112        1.12       66.48
         10 |        142        1.42       67.90
         11 |        174        1.74       69.64
         12 |        143        1.43       71.07
         13 |        166        1.66       72.73
         14 |        172        1.72       74.45
         15 |        202        2.02       76.47
         16 |        193        1.93       78.40
         17 |        199        1.99       80.39
         18 |        187        1.87       82.26
         19 |        211        2.11       84.37
         20 |        163        1.63       86.00
         21 |        159        1.59       87.59
         22 |        189        1.89       89.48
         23 |        153        1.53       91.01
         24 |        144        1.44       92.45
         25 |        120        1.20       93.65
         26 |         93        0.93       94.58
         27 |         80        0.80       95.38
         28 |        100        1.00       96.38
         29 |         63        0.63       97.01
         30 |         50        0.50       97.51
         31 |         50        0.50       98.01
         32 |         36        0.36       98.37
         33 |         34        0.34       98.71
         34 |         19        0.19       98.90
         35 |         14        0.14       99.04
         36 |         23        0.23       99.27
         37 |         13        0.13       99.40
         38 |         13        0.13       99.53
         39 |          7        0.07       99.60
         40 |          7        0.07       99.67
         41 |          6        0.06       99.73
         42 |          7        0.07       99.80
         43 |          2        0.02       99.82
         44 |          4        0.04       99.86
         45 |          3        0.03       99.89
         46 |          1        0.01       99.90
         47 |          2        0.02       99.92
         48 |          1        0.01       99.93
         50 |          2        0.02       99.95
         51 |          1        0.01       99.96
         52 |          1        0.01       99.97
         55 |          1        0.01       99.98
         62 |          1        0.01       99.99
         78 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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