Frequencies for month variable in accident dataset :

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         39        8.02        8.02
          2 |         44        9.05       17.08
          3 |         37        7.61       24.69
          4 |         38        7.82       32.51
          5 |         33        6.79       39.30
          6 |         38        7.82       47.12
          7 |         43        8.85       55.97
          8 |         38        7.82       63.79
          9 |         46        9.47       73.25
         10 |         39        8.02       81.28
         11 |         36        7.41       88.68
         12 |         55       11.32      100.00
------------+-----------------------------------
      Total |        486      100.00

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