Frequencies for first 10,000 rows of first_mo variable in vehicle dataset :

    date of |
      first |
     crash, |
 suspension |
         or |
 conviction |
    (month) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,015       60.15       60.15
          1 |        280        2.80       62.95
          2 |        255        2.55       65.50
          3 |        297        2.97       68.47
          4 |        326        3.26       71.73
          5 |        290        2.90       74.63
          6 |        304        3.04       77.67
          7 |        323        3.23       80.90
          8 |        330        3.30       84.20
          9 |        271        2.71       86.91
         10 |        310        3.10       90.01
         11 |        278        2.78       92.79
         12 |        265        2.65       95.44
         98 |         64        0.64       96.08
         99 |        392        3.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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