Frequencies for month variable in accident dataset :

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         50        8.76        8.76
          2 |         44        7.71       16.46
          3 |         46        8.06       24.52
          4 |         36        6.30       30.82
          5 |         48        8.41       39.23
          6 |         47        8.23       47.46
          7 |         47        8.23       55.69
          8 |         48        8.41       64.10
          9 |         52        9.11       73.20
         10 |         53        9.28       82.49
         11 |         41        7.18       89.67
         12 |         59       10.33      100.00
------------+-----------------------------------
      Total |        571      100.00

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