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

      First |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,683       46.83       46.83
          1 |        384        3.84       50.67
          2 |        361        3.61       54.28
          3 |        400        4.00       58.28
          4 |        381        3.81       62.09
          5 |        411        4.11       66.20
          6 |        389        3.89       70.09
          7 |        420        4.20       74.29
          8 |        404        4.04       78.33
          9 |        386        3.86       82.19
         10 |        435        4.35       86.54
         11 |        381        3.81       90.35
         12 |        363        3.63       93.98
         99 |        602        6.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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