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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,138       61.38       61.38
          1 |         43        0.43       61.81
          2 |         86        0.86       62.67
          3 |         89        0.89       63.56
          4 |         79        0.79       64.35
          5 |         80        0.80       65.15
          6 |        107        1.07       66.22
          7 |         96        0.96       67.18
          8 |        126        1.26       68.44
          9 |        127        1.27       69.71
         10 |        137        1.37       71.08
         11 |        138        1.38       72.46
         12 |        146        1.46       73.92
         13 |        141        1.41       75.33
         14 |        171        1.71       77.04
         15 |        170        1.70       78.74
         16 |        181        1.81       80.55
         17 |        176        1.76       82.31
         18 |        208        2.08       84.39
         19 |        156        1.56       85.95
         20 |        137        1.37       87.32
         21 |        146        1.46       88.78
         22 |        142        1.42       90.20
         23 |        133        1.33       91.53
         24 |        121        1.21       92.74
         25 |        110        1.10       93.84
         26 |         85        0.85       94.69
         27 |         98        0.98       95.67
         28 |         75        0.75       96.42
         29 |         61        0.61       97.03
         30 |         43        0.43       97.46
         31 |         40        0.40       97.86
         32 |         37        0.37       98.23
         33 |         27        0.27       98.50
         34 |         25        0.25       98.75
         35 |         11        0.11       98.86
         36 |         11        0.11       98.97
         37 |         19        0.19       99.16
         38 |         18        0.18       99.34
         39 |          8        0.08       99.42
         40 |          7        0.07       99.49
         41 |          8        0.08       99.57
         42 |          4        0.04       99.61
         43 |          6        0.06       99.67
         44 |          3        0.03       99.70
         45 |          5        0.05       99.75
         46 |          5        0.05       99.80
         47 |          6        0.06       99.86
         48 |          4        0.04       99.90
         49 |          2        0.02       99.92
         50 |          1        0.01       99.93
         52 |          1        0.01       99.94
         53 |          1        0.01       99.95
         55 |          1        0.01       99.96
         58 |          1        0.01       99.97
         60 |          1        0.01       99.98
         70 |          1        0.01       99.99
         85 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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