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

      FIRST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,238       52.38       52.38
          1 |        329        3.29       55.67
          2 |        306        3.06       58.73
          3 |        359        3.59       62.32
          4 |        318        3.18       65.50
          5 |        312        3.12       68.62
          6 |        384        3.84       72.46
          7 |        375        3.75       76.21
          8 |        391        3.91       80.12
          9 |        355        3.55       83.67
         10 |        350        3.50       87.17
         11 |        362        3.62       90.79
         12 |        321        3.21       94.00
         99 |        553        5.53       99.53
          . |         47        0.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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