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

   speeding |
    related |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,250       72.50       72.50
          2 |         26        0.26       72.76
          3 |        591        5.91       78.67
          4 |      1,163       11.63       90.30
          5 |         73        0.73       91.03
          8 |         51        0.51       91.54
          9 |        846        8.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016