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

      First |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,402       44.02       44.02
          1 |        398        3.98       48.00
          2 |        387        3.87       51.87
          3 |        408        4.08       55.95
          4 |        437        4.37       60.32
          5 |        468        4.68       65.00
          6 |        408        4.08       69.08
          7 |        413        4.13       73.21
          8 |        427        4.27       77.48
          9 |        376        3.76       81.24
         10 |        439        4.39       85.63
         11 |        431        4.31       89.94
         12 |        368        3.68       93.62
         99 |        638        6.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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