Frequencies for day variable in accident dataset :

   Accident |
   Date-Day |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         15        3.09        3.09
          2 |         11        2.26        5.35
          3 |         11        2.26        7.61
          4 |         20        4.12       11.73
          5 |         25        5.14       16.87
          6 |         17        3.50       20.37
          7 |          9        1.85       22.22
          8 |         13        2.67       24.90
          9 |         14        2.88       27.78
         10 |         22        4.53       32.30
         11 |         13        2.67       34.98
         12 |         15        3.09       38.07
         13 |         11        2.26       40.33
         14 |          8        1.65       41.98
         15 |         10        2.06       44.03
         16 |         19        3.91       47.94
         17 |         19        3.91       51.85
         18 |         17        3.50       55.35
         19 |         19        3.91       59.26
         20 |         23        4.73       63.99
         21 |          9        1.85       65.84
         22 |         12        2.47       68.31
         23 |         14        2.88       71.19
         24 |         23        4.73       75.93
         25 |         13        2.67       78.60
         26 |         20        4.12       82.72
         27 |         17        3.50       86.21
         28 |         20        4.12       90.33
         29 |         17        3.50       93.83
         30 |         18        3.70       97.53
         31 |         12        2.47      100.00
------------+-----------------------------------
      Total |        486      100.00

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