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

 crash type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         52        0.52        0.52
          1 |        906        9.06        9.58
          2 |        289        2.89       12.47
          3 |         14        0.14       12.61
          4 |          2        0.02       12.63
          5 |         25        0.25       12.88
          6 |        615        6.15       19.03
          7 |        303        3.03       22.06
          8 |          7        0.07       22.13
          9 |          4        0.04       22.17
         10 |         22        0.22       22.39
         11 |         49        0.49       22.88
         12 |          8        0.08       22.96
         13 |      1,493       14.93       37.89
         14 |         38        0.38       38.27
         15 |         23        0.23       38.50
         16 |          5        0.05       38.55
         20 |        172        1.72       40.27
         21 |        162        1.62       41.89
         22 |          8        0.08       41.97
         23 |          2        0.02       41.99
         24 |        197        1.97       43.96
         25 |        191        1.91       45.87
         26 |          4        0.04       45.91
         27 |          2        0.02       45.93
         28 |         51        0.51       46.44
         29 |         43        0.43       46.87
         30 |          4        0.04       46.91
         31 |          4        0.04       46.95
         32 |         80        0.80       47.75
         33 |          2        0.02       47.77
         38 |          3        0.03       47.80
         39 |          3        0.03       47.83
         42 |          8        0.08       47.91
         44 |         47        0.47       48.38
         45 |        110        1.10       49.48
         46 |         30        0.30       49.78
         47 |         33        0.33       50.11
         48 |        110        1.10       51.21
         49 |          6        0.06       51.27
         50 |        413        4.13       55.40
         51 |        413        4.13       59.53
         52 |        204        2.04       61.57
         53 |         16        0.16       61.73
         54 |          1        0.01       61.74
         55 |          1        0.01       61.75
         58 |          4        0.04       61.79
         59 |          4        0.04       61.83
         60 |          1        0.01       61.84
         61 |          1        0.01       61.85
         63 |          2        0.02       61.87
         64 |        152        1.52       63.39
         65 |        152        1.52       64.91
         66 |        136        1.36       66.27
         67 |          2        0.02       66.29
         68 |        321        3.21       69.50
         69 |        321        3.21       72.71
         70 |          6        0.06       72.77
         71 |          6        0.06       72.83
         72 |         18        0.18       73.01
         73 |         18        0.18       73.19
         74 |         20        0.20       73.39
         76 |         14        0.14       73.53
         77 |         14        0.14       73.67
         78 |         13        0.13       73.80
         79 |         13        0.13       73.93
         80 |          6        0.06       73.99
         81 |          6        0.06       74.05
         82 |        185        1.85       75.90
         83 |        185        1.85       77.75
         84 |         10        0.10       77.85
         85 |          4        0.04       77.89
         86 |        130        1.30       79.19
         87 |        130        1.30       80.49
         88 |        188        1.88       82.37
         89 |        188        1.88       84.25
         90 |          6        0.06       84.31
         91 |          8        0.08       84.39
         92 |         14        0.14       84.53
         93 |          2        0.02       84.55
         98 |      1,478       14.78       99.33
         99 |         67        0.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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