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

    Roadway |
    Surface |
  Condition |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,782       87.82       87.82
          2 |        993        9.93       97.75
          3 |         33        0.33       98.08
          4 |         66        0.66       98.74
          5 |         47        0.47       99.21
          8 |         22        0.22       99.43
          9 |         57        0.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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