Frequencies for day variable in accident dataset :

   Accident |
   Date-Day |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         18        3.68        3.68
          2 |         20        4.09        7.77
          3 |         17        3.48       11.25
          4 |         16        3.27       14.52
          5 |         16        3.27       17.79
          6 |         15        3.07       20.86
          7 |         16        3.27       24.13
          8 |         13        2.66       26.79
          9 |         14        2.86       29.65
         10 |         18        3.68       33.33
         11 |         14        2.86       36.20
         12 |         16        3.27       39.47
         13 |         14        2.86       42.33
         14 |         14        2.86       45.19
         15 |         27        5.52       50.72
         16 |         18        3.68       54.40
         17 |         19        3.89       58.28
         18 |         24        4.91       63.19
         19 |         15        3.07       66.26
         20 |         13        2.66       68.92
         21 |         14        2.86       71.78
         22 |         16        3.27       75.05
         23 |         17        3.48       78.53
         24 |          9        1.84       80.37
         25 |         10        2.04       82.41
         26 |         22        4.50       86.91
         27 |         11        2.25       89.16
         28 |         18        3.68       92.84
         29 |         16        3.27       96.11
         30 |         15        3.07       99.18
         31 |          4        0.82      100.00
------------+-----------------------------------
      Total |        489      100.00

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