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

      First |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,993       39.93       39.93
          1 |        358        3.58       43.51
          2 |        413        4.13       47.64
          3 |        418        4.18       51.82
          4 |        440        4.40       56.22
          5 |        445        4.45       60.67
          6 |        437        4.37       65.04
          7 |        434        4.34       69.38
          8 |        469        4.69       74.07
          9 |        443        4.43       78.50
         10 |        445        4.45       82.95
         11 |        396        3.96       86.91
         12 |        408        4.08       90.99
         99 |        901        9.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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