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

      speed |
    related |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,407       74.07       74.07
          1 |      1,909       19.09       93.16
          8 |         61        0.61       93.77
          9 |        623        6.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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