Frequencies for first 10,000 rows of weekday variable in natl1999 dataset :

Day of Week |
 Child Born |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        877        8.77        8.77
          2 |      1,537       15.37       24.14
          3 |      1,745       17.45       41.59
          4 |      1,633       16.33       57.92
          5 |      1,613       16.13       74.05
          6 |      1,555       15.55       89.60
          7 |      1,040       10.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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