Frequencies for first 10,000 rows of make variable in person dataset :

       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |        188        1.88        1.88
          3 |          7        0.07        1.95
          6 |        142        1.42        3.37
          7 |        557        5.57        8.94
          9 |         40        0.40        9.34
         10 |          3        0.03        9.37
         12 |      1,617       16.17       25.54
         13 |         54        0.54       26.08
         14 |        176        1.76       27.84
         18 |        169        1.69       29.53
         19 |         96        0.96       30.49
         20 |      1,559       15.59       46.08
         21 |        117        1.17       47.25
         22 |        232        2.32       49.57
         23 |        335        3.35       52.92
         24 |         97        0.97       53.89
         30 |         67        0.67       54.56
         32 |         10        0.10       54.66
         34 |         66        0.66       55.32
         35 |        422        4.22       59.54
         37 |        658        6.58       66.12
         38 |         61        0.61       66.73
         39 |          6        0.06       66.79
         41 |        108        1.08       67.87
         42 |         37        0.37       68.24
         45 |         12        0.12       68.36
         47 |          2        0.02       68.38
         48 |         25        0.25       68.63
         49 |        655        6.55       75.18
         50 |          6        0.06       75.24
         51 |         81        0.81       76.05
         52 |        144        1.44       77.49
         53 |        128        1.28       78.77
         54 |         87        0.87       79.64
         55 |         90        0.90       80.54
         58 |         49        0.49       81.03
         59 |         43        0.43       81.46
         61 |          1        0.01       81.47
         62 |         13        0.13       81.60
         63 |        100        1.00       82.60
         64 |          1        0.01       82.61
         69 |          3        0.03       82.64
         71 |          4        0.04       82.68
         72 |        147        1.47       84.15
         73 |         59        0.59       84.74
         76 |        100        1.00       85.74
         80 |          2        0.02       85.76
         82 |        164        1.64       87.40
         83 |          1        0.01       87.41
         84 |         86        0.86       88.27
         85 |         66        0.66       88.93
         86 |         35        0.35       89.28
         87 |         58        0.58       89.86
         89 |          6        0.06       89.92
         90 |          3        0.03       89.95
         93 |        144        1.44       91.39
         98 |        114        1.14       92.53
         99 |        132        1.32       93.85
          . |        615        6.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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