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

      FIRST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,464       54.64       54.64
          1 |        336        3.36       58.00
          2 |        296        2.96       60.96
          3 |        344        3.44       64.40
          4 |        303        3.03       67.43
          5 |        375        3.75       71.18
          6 |        333        3.33       74.51
          7 |        364        3.64       78.15
          8 |        342        3.42       81.57
          9 |        332        3.32       84.89
         10 |        357        3.57       88.46
         11 |        319        3.19       91.65
         12 |        312        3.12       94.77
         99 |        471        4.71       99.48
          . |         52        0.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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