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

  Pre-Event |
   movement |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         85        0.85        0.85
          1 |      6,237       62.37       63.22
          2 |        110        1.10       64.32
          3 |         21        0.21       64.53
          4 |         28        0.28       64.81
          5 |        278        2.78       67.59
          6 |        183        1.83       69.42
          7 |          9        0.09       69.51
          8 |          6        0.06       69.57
          9 |          3        0.03       69.60
         10 |        101        1.01       70.61
         11 |        662        6.62       77.23
         12 |         45        0.45       77.68
         13 |         33        0.33       78.01
         14 |      1,831       18.31       96.32
         15 |        181        1.81       98.13
         16 |          7        0.07       98.20
         17 |         14        0.14       98.34
         98 |         34        0.34       98.68
         99 |        132        1.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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