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

      FIRST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,358       53.58       53.58
          1 |        349        3.49       57.07
          2 |        304        3.04       60.11
          3 |        357        3.57       63.68
          4 |        326        3.26       66.94
          5 |        356        3.56       70.50
          6 |        341        3.41       73.91
          7 |        390        3.90       77.81
          8 |        344        3.44       81.25
          9 |        363        3.63       84.88
         10 |        348        3.48       88.36
         11 |        353        3.53       91.89
         12 |        335        3.35       95.24
         99 |        415        4.15       99.39
          . |         61        0.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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