Frequencies for first 10,000 rows of t_cont_f variable in accident dataset :

    Traffic |
    Control |
Device-Func |
    tioning |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,915       79.15       79.15
          1 |          7        0.07       79.22
          2 |         16        0.16       79.38
          3 |      1,992       19.92       99.30
          9 |         70        0.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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