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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,926       59.26       59.26
          1 |         64        0.64       59.90
          2 |         80        0.80       60.70
          3 |         84        0.84       61.54
          4 |         92        0.92       62.46
          5 |         87        0.87       63.33
          6 |         97        0.97       64.30
          7 |        131        1.31       65.61
          8 |        122        1.22       66.83
          9 |        123        1.23       68.06
         10 |        141        1.41       69.47
         11 |        134        1.34       70.81
         12 |        172        1.72       72.53
         13 |        158        1.58       74.11
         14 |        167        1.67       75.78
         15 |        153        1.53       77.31
         16 |        181        1.81       79.12
         17 |        188        1.88       81.00
         18 |        193        1.93       82.93
         19 |        180        1.80       84.73
         20 |        159        1.59       86.32
         21 |        168        1.68       88.00
         22 |        157        1.57       89.57
         23 |        147        1.47       91.04
         24 |        119        1.19       92.23
         25 |        117        1.17       93.40
         26 |        115        1.15       94.55
         27 |         92        0.92       95.47
         28 |         78        0.78       96.25
         29 |         57        0.57       96.82
         30 |         65        0.65       97.47
         31 |         36        0.36       97.83
         32 |         36        0.36       98.19
         33 |         32        0.32       98.51
         34 |         27        0.27       98.78
         35 |         23        0.23       99.01
         36 |         21        0.21       99.22
         37 |         12        0.12       99.34
         38 |          8        0.08       99.42
         39 |         15        0.15       99.57
         40 |          9        0.09       99.66
         41 |          6        0.06       99.72
         42 |          6        0.06       99.78
         43 |          3        0.03       99.81
         44 |          4        0.04       99.85
         45 |          7        0.07       99.92
         46 |          3        0.03       99.95
         47 |          1        0.01       99.96
         49 |          1        0.01       99.97
         50 |          1        0.01       99.98
         51 |          1        0.01       99.99
         53 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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