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

 crash type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         63        0.63        0.63
          1 |        961        9.61       10.24
          2 |        391        3.91       14.15
          3 |         14        0.14       14.29
          4 |          5        0.05       14.34
          5 |         12        0.12       14.46
          6 |        624        6.24       20.70
          7 |        356        3.56       24.26
          8 |          8        0.08       24.34
          9 |          6        0.06       24.40
         10 |         14        0.14       24.54
         11 |         56        0.56       25.10
         12 |         12        0.12       25.22
         13 |      1,506       15.06       40.28
         14 |         39        0.39       40.67
         15 |         22        0.22       40.89
         20 |        159        1.59       42.48
         21 |        152        1.52       44.00
         22 |          6        0.06       44.06
         23 |          1        0.01       44.07
         24 |        163        1.63       45.70
         25 |        155        1.55       47.25
         26 |          5        0.05       47.30
         27 |          3        0.03       47.33
         28 |         40        0.40       47.73
         29 |         34        0.34       48.07
         30 |          4        0.04       48.11
         31 |          2        0.02       48.13
         32 |         68        0.68       48.81
         33 |          6        0.06       48.87
         38 |          1        0.01       48.88
         39 |          1        0.01       48.89
         42 |         14        0.14       49.03
         43 |          2        0.02       49.05
         44 |         35        0.35       49.40
         45 |        105        1.05       50.45
         46 |         35        0.35       50.80
         47 |         35        0.35       51.15
         48 |         60        0.60       51.75
         50 |        399        3.99       55.74
         51 |        399        3.99       59.73
         52 |        176        1.76       61.49
         53 |          6        0.06       61.55
         58 |          2        0.02       61.57
         59 |          2        0.02       61.59
         60 |          1        0.01       61.60
         61 |          1        0.01       61.61
         62 |          4        0.04       61.65
         64 |        129        1.29       62.94
         65 |        129        1.29       64.23
         66 |        126        1.26       65.49
         68 |        349        3.49       68.98
         69 |        349        3.49       72.47
         70 |          4        0.04       72.51
         71 |          4        0.04       72.55
         72 |         19        0.19       72.74
         73 |         19        0.19       72.93
         74 |         32        0.32       73.25
         76 |         10        0.10       73.35
         77 |         10        0.10       73.45
         78 |         10        0.10       73.55
         79 |         10        0.10       73.65
         80 |          4        0.04       73.69
         81 |          4        0.04       73.73
         82 |        168        1.68       75.41
         83 |        168        1.68       77.09
         84 |          8        0.08       77.17
         85 |          6        0.06       77.23
         86 |        141        1.41       78.64
         87 |        141        1.41       80.05
         88 |        206        2.06       82.11
         89 |        206        2.06       84.17
         90 |          2        0.02       84.19
         91 |          2        0.02       84.21
         92 |         25        0.25       84.46
         93 |         12        0.12       84.58
         98 |      1,484       14.84       99.42
         99 |         58        0.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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