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

       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          7        0.07        0.07
          2 |        171        1.71        1.78
          6 |         74        0.74        2.52
          7 |        530        5.30        7.82
          9 |        138        1.38        9.20
         10 |          9        0.09        9.29
         12 |      1,629       16.29       25.58
         13 |         58        0.58       26.16
         14 |        155        1.55       27.71
         18 |        342        3.42       31.13
         19 |        142        1.42       32.55
         20 |      1,826       18.26       50.81
         21 |        366        3.66       54.47
         22 |        325        3.25       57.72
         23 |        265        2.65       60.37
         24 |         10        0.10       60.47
         30 |         76        0.76       61.23
         31 |          4        0.04       61.27
         32 |          7        0.07       61.34
         34 |         35        0.35       61.69
         35 |        444        4.44       66.13
         37 |        384        3.84       69.97
         38 |         55        0.55       70.52
         39 |          2        0.02       70.54
         41 |        148        1.48       72.02
         42 |         40        0.40       72.42
         43 |          5        0.05       72.47
         45 |         10        0.10       72.57
         46 |          4        0.04       72.61
         47 |          4        0.04       72.65
         48 |         76        0.76       73.41
         49 |        691        6.91       80.32
         51 |         42        0.42       80.74
         52 |         79        0.79       81.53
         53 |         48        0.48       82.01
         54 |         31        0.31       82.32
         55 |         76        0.76       83.08
         56 |          1        0.01       83.09
         57 |          6        0.06       83.15
         58 |          8        0.08       83.23
         59 |          2        0.02       83.25
         60 |          7        0.07       83.32
         61 |          1        0.01       83.33
         69 |          1        0.01       83.34
         72 |         40        0.40       83.74
         73 |         37        0.37       84.11
         74 |          1        0.01       84.12
         76 |         55        0.55       84.67
         81 |          1        0.01       84.68
         82 |        107        1.07       85.75
         84 |        124        1.24       86.99
         85 |         53        0.53       87.52
         86 |         44        0.44       87.96
         87 |         62        0.62       88.58
         88 |          1        0.01       88.59
         89 |         33        0.33       88.92
         98 |        188        1.88       90.80
         99 |        160        1.60       92.40
          . |        760        7.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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