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

      Speed |
    Related |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,447       74.47       74.47
          1 |      1,890       18.90       93.37
          8 |         61        0.61       93.98
          9 |        602        6.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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