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

    Traffic |
    Control |
Device-Func |
    tioning |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,854       78.54       78.54
          1 |         14        0.14       78.68
          2 |         11        0.11       78.79
          3 |      2,020       20.20       98.99
          9 |        101        1.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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