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

  Pre-Event |
   movement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         81        0.81        0.81
          1 |      6,294       62.94       63.75
          2 |        100        1.00       64.75
          3 |         24        0.24       64.99
          4 |         38        0.38       65.37
          5 |        332        3.32       68.69
          6 |        157        1.57       70.26
          7 |         15        0.15       70.41
          8 |          6        0.06       70.47
          9 |          2        0.02       70.49
         10 |         87        0.87       71.36
         11 |        658        6.58       77.94
         12 |         29        0.29       78.23
         13 |         35        0.35       78.58
         14 |      1,696       16.96       95.54
         15 |        230        2.30       97.84
         16 |         15        0.15       97.99
         17 |         23        0.23       98.22
         98 |         21        0.21       98.43
         99 |        157        1.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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