Frequencies for preg_stat variable in parkwork dataset :

    vehicle |
registratio |
    n state |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         15        1.38        1.38
          1 |         12        1.10        2.48
          4 |         17        1.56        4.04
          5 |          6        0.55        4.59
          6 |        172       15.79       20.39
          8 |         12        1.10       21.49
          9 |         15        1.38       22.87
         10 |          1        0.09       22.96
         11 |          1        0.09       23.05
         12 |         66        6.06       29.11
         13 |         21        1.93       31.04
         15 |          2        0.18       31.22
         17 |         45        4.13       35.35
         18 |         31        2.85       38.20
         19 |          1        0.09       38.29
         20 |          7        0.64       38.93
         21 |          9        0.83       39.76
         22 |         15        1.38       41.14
         23 |          1        0.09       41.23
         24 |         25        2.30       43.53
         25 |         13        1.19       44.72
         26 |         38        3.49       48.21
         27 |          6        0.55       48.76
         28 |          5        0.46       49.22
         29 |         31        2.85       52.07
         30 |          4        0.37       52.43
         31 |          1        0.09       52.53
         32 |          7        0.64       53.17
         33 |          3        0.28       53.44
         34 |         30        2.75       56.20
         35 |          5        0.46       56.66
         36 |         82        7.53       64.19
         37 |         40        3.67       67.86
         38 |          2        0.18       68.04
         39 |         47        4.32       72.36
         40 |         15        1.38       73.74
         41 |          5        0.46       74.20
         42 |         51        4.68       78.88
         45 |          8        0.73       79.61
         46 |          1        0.09       79.71
         47 |         25        2.30       82.00
         48 |         87        7.99       89.99
         49 |         12        1.10       91.09
         51 |         15        1.38       92.47
         53 |         18        1.65       94.12
         54 |          8        0.73       94.86
         55 |         12        1.10       95.96
         56 |          2        0.18       96.14
         91 |          9        0.83       96.97
         92 |         12        1.10       98.07
         93 |         11        1.01       99.08
         97 |          1        0.09       99.17
         99 |          9        0.83      100.00
------------+-----------------------------------
      Total |      1,089      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016