Frequencies for first 10,000 rows of p_crash1 variable in vehicle dataset :

  pre-event |
   movement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         51        0.51        0.51
          1 |      6,283       62.83       63.34
          2 |        123        1.23       64.57
          3 |         25        0.25       64.82
          4 |         42        0.42       65.24
          5 |        417        4.17       69.41
          6 |        156        1.56       70.97
          7 |          5        0.05       71.02
          8 |          7        0.07       71.09
         10 |         74        0.74       71.83
         11 |        677        6.77       78.60
         12 |         49        0.49       79.09
         13 |         23        0.23       79.32
         14 |      1,628       16.28       95.60
         15 |        178        1.78       97.38
         16 |         17        0.17       97.55
         17 |         28        0.28       97.83
         98 |         50        0.50       98.33
         99 |        167        1.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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