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

         a4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,973       59.73       59.73
          1 |         57        0.57       60.30
          2 |         86        0.86       61.16
          3 |         71        0.71       61.87
          4 |         80        0.80       62.67
          5 |         80        0.80       63.47
          6 |         87        0.87       64.34
          7 |        113        1.13       65.47
          8 |        141        1.41       66.88
          9 |        133        1.33       68.21
         10 |        110        1.10       69.31
         11 |        176        1.76       71.07
         12 |        172        1.72       72.79
         13 |        172        1.72       74.51
         14 |        167        1.67       76.18
         15 |        172        1.72       77.90
         16 |        159        1.59       79.49
         17 |        181        1.81       81.30
         18 |        193        1.93       83.23
         19 |        183        1.83       85.06
         20 |        173        1.73       86.79
         21 |        169        1.69       88.48
         22 |        130        1.30       89.78
         23 |        144        1.44       91.22
         24 |        112        1.12       92.34
         25 |        103        1.03       93.37
         26 |        109        1.09       94.46
         27 |         85        0.85       95.31
         28 |         75        0.75       96.06
         29 |         71        0.71       96.77
         30 |         63        0.63       97.40
         31 |         41        0.41       97.81
         32 |         37        0.37       98.18
         33 |         43        0.43       98.61
         34 |         21        0.21       98.82
         35 |         28        0.28       99.10
         36 |         21        0.21       99.31
         37 |         15        0.15       99.46
         38 |         14        0.14       99.60
         39 |         10        0.10       99.70
         40 |          7        0.07       99.77
         41 |          4        0.04       99.81
         42 |          4        0.04       99.85
         43 |          1        0.01       99.86
         44 |          2        0.02       99.88
         45 |          2        0.02       99.90
         46 |          3        0.03       99.93
         49 |          3        0.03       99.96
         50 |          1        0.01       99.97
         51 |          2        0.02       99.99
         53 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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