Frequencies for first 10,000 rows of county variable in accident dataset :

     County |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        397        3.97        3.97
          3 |        219        2.19        6.16
          5 |        184        1.84        8.00
          7 |        114        1.14        9.14
          9 |        207        2.07       11.21
         11 |        231        2.31       13.52
         12 |         12        0.12       13.64
         13 |        509        5.09       18.73
         15 |        107        1.07       19.80
         17 |        101        1.01       20.81
         19 |        324        3.24       24.05
         20 |         50        0.50       24.55
         21 |        100        1.00       25.55
         23 |         47        0.47       26.02
         25 |        301        3.01       29.03
         27 |         55        0.55       29.58
         29 |        173        1.73       31.31
         31 |        177        1.77       33.08
         33 |         87        0.87       33.95
         35 |         53        0.53       34.48
         37 |      1,112       11.12       45.60
         39 |         50        0.50       46.10
         41 |         76        0.76       46.86
         43 |         49        0.49       47.35
         45 |         50        0.50       47.85
         47 |         75        0.75       48.60
         49 |         33        0.33       48.93
         50 |          1        0.01       48.94
         51 |         43        0.43       49.37
         53 |         89        0.89       50.26
         55 |         66        0.66       50.92
         57 |        203        2.03       52.95
         59 |        303        3.03       55.98
         60 |          1        0.01       55.99
         61 |         64        0.64       56.63
         63 |         42        0.42       57.05
         65 |        283        2.83       59.88
         67 |        163        1.63       61.51
         69 |        111        1.11       62.62
         70 |          1        0.01       62.63
         71 |        358        3.58       66.21
         73 |        441        4.41       70.62
         75 |         83        0.83       71.45
         77 |        132        1.32       72.77
         79 |         63        0.63       73.40
         81 |        115        1.15       74.55
         83 |        149        1.49       76.04
         85 |        194        1.94       77.98
         87 |         89        0.89       78.87
         89 |         94        0.94       79.81
         90 |         10        0.10       79.91
         91 |         42        0.42       80.33
         93 |         63        0.63       80.96
         95 |        200        2.00       82.96
         97 |        170        1.70       84.66
         99 |        204        2.04       86.70
        100 |          1        0.01       86.71
        101 |        129        1.29       88.00
        103 |        154        1.54       89.54
        105 |        104        1.04       90.58
        107 |         94        0.94       91.52
        109 |         41        0.41       91.93
        110 |          6        0.06       91.99
        111 |        135        1.35       93.34
        113 |         75        0.75       94.09
        115 |         66        0.66       94.75
        117 |         56        0.56       95.31
        119 |         67        0.67       95.98
        120 |          8        0.08       96.06
        121 |         25        0.25       96.31
        123 |         61        0.61       96.92
        125 |         60        0.60       97.52
        127 |         66        0.66       98.18
        129 |         15        0.15       98.33
        130 |          4        0.04       98.37
        131 |         34        0.34       98.71
        133 |         15        0.15       98.86
        135 |          3        0.03       98.89
        137 |          1        0.01       98.90
        139 |         18        0.18       99.08
        141 |          6        0.06       99.14
        143 |         28        0.28       99.42
        145 |         12        0.12       99.54
        147 |          1        0.01       99.55
        149 |          4        0.04       99.59
        150 |          4        0.04       99.63
        160 |          1        0.01       99.64
        170 |         19        0.19       99.83
        210 |          1        0.01       99.84
        230 |          1        0.01       99.85
        240 |          1        0.01       99.86
        250 |          1        0.01       99.87
        260 |          3        0.03       99.90
        290 |          5        0.05       99.95
        933 |          1        0.01       99.96
        997 |          3        0.03       99.99
        999 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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