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

      FIRST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,324       53.24       53.24
          1 |        356        3.56       56.80
          2 |        335        3.35       60.15
          3 |        332        3.32       63.47
          4 |        336        3.36       66.83
          5 |        367        3.67       70.50
          6 |        387        3.87       74.37
          7 |        369        3.69       78.06
          8 |        360        3.60       81.66
          9 |        371        3.71       85.37
         10 |        324        3.24       88.61
         11 |        332        3.32       91.93
         12 |        347        3.47       95.40
         99 |        408        4.08       99.48
          . |         52        0.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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