Frequencies for first 10,000 rows of weekday variable in natlterr1999 dataset :

Day of Week |
 Child Born |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        868        8.68        8.68
          2 |      1,515       15.15       23.83
          3 |      1,763       17.63       41.46
          4 |      1,563       15.63       57.09
          5 |      1,669       16.69       73.78
          6 |      1,609       16.09       89.87
          7 |      1,013       10.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015