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

  pre-event |
   movement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         64        0.64        0.64
          1 |      6,309       63.09       63.73
          2 |        164        1.64       65.37
          3 |         44        0.44       65.81
          4 |         34        0.34       66.15
          5 |        316        3.16       69.31
          6 |        155        1.55       70.86
          7 |         17        0.17       71.03
          8 |          6        0.06       71.09
          9 |          1        0.01       71.10
         10 |        102        1.02       72.12
         11 |        673        6.73       78.85
         12 |         37        0.37       79.22
         13 |         25        0.25       79.47
         14 |      1,615       16.15       95.62
         15 |        187        1.87       97.49
         16 |         15        0.15       97.64
         17 |         27        0.27       97.91
         98 |         38        0.38       98.29
         99 |        171        1.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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