Frequencies for first 10,000 rows of a3 variable in miacc83 dataset :

         a3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,162       41.62       41.62
          1 |         51        0.51       42.13
          2 |         72        0.72       42.85
          3 |         84        0.84       43.69
          4 |         96        0.96       44.65
          5 |         96        0.96       45.61
          6 |        123        1.23       46.84
          7 |        174        1.74       48.58
          8 |        188        1.88       50.46
          9 |        184        1.84       52.30
         10 |        207        2.07       54.37
         11 |        239        2.39       56.76
         12 |        218        2.18       58.94
         13 |        240        2.40       61.34
         14 |        264        2.64       63.98
         15 |        241        2.41       66.39
         16 |        309        3.09       69.48
         17 |        297        2.97       72.45
         18 |        283        2.83       75.28
         19 |        305        3.05       78.33
         20 |        245        2.45       80.78
         21 |        220        2.20       82.98
         22 |        238        2.38       85.36
         23 |        228        2.28       87.64
         24 |        190        1.90       89.54
         25 |        170        1.70       91.24
         26 |        143        1.43       92.67
         27 |        114        1.14       93.81
         28 |        107        1.07       94.88
         29 |         78        0.78       95.66
         30 |         77        0.77       96.43
         31 |         56        0.56       96.99
         32 |         55        0.55       97.54
         33 |         43        0.43       97.97
         34 |         36        0.36       98.33
         35 |         37        0.37       98.70
         36 |         19        0.19       98.89
         37 |         24        0.24       99.13
         38 |         18        0.18       99.31
         39 |         10        0.10       99.41
         40 |          7        0.07       99.48
         41 |          9        0.09       99.57
         42 |          6        0.06       99.63
         43 |          6        0.06       99.69
         44 |          6        0.06       99.75
         45 |          6        0.06       99.81
         46 |          5        0.05       99.86
         47 |          3        0.03       99.89
         48 |          1        0.01       99.90
         49 |          2        0.02       99.92
         50 |          1        0.01       99.93
         51 |          4        0.04       99.97
         52 |          1        0.01       99.98
         57 |          1        0.01       99.99
         59 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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