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

      FIRST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,515       55.15       55.15
          1 |        333        3.33       58.48
          2 |        330        3.30       61.78
          3 |        373        3.73       65.51
          4 |        324        3.24       68.75
          5 |        327        3.27       72.02
          6 |        287        2.87       74.89
          7 |        361        3.61       78.50
          8 |        383        3.83       82.33
          9 |        336        3.36       85.69
         10 |        345        3.45       89.14
         11 |        345        3.45       92.59
         12 |        298        2.98       95.57
         99 |        381        3.81       99.38
          . |         62        0.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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