http://www.mapleprimes.com/questions/37119-The-Birthday-Problem--Probability-Is en-us 2026 Maplesoft, A Division of Waterloo Maple Inc. Maplesoft Document System Fri, 12 Jun 2026 20:26:05 GMT Fri, 12 Jun 2026 20:26:05 GMT The latest answers and comments added to the Question, The birthday problem - probability is actually higher in reality http://www.mapleprimes.com/images/mapleprimeswhite.jpg http://www.mapleprimes.com/questions/37119-The-Birthday-Problem--Probability-Is http://www.mapleprimes.com/questions/37119-The-Birthday-Problem--Probability-Is?ref=Feed:MaplePrimes:The birthday problem - probability is actually higher in reality:Comments#answer65163 <p>The &quot;9 months after a holiday&quot; idea is cute, but not really supported by statistics I think.&nbsp; At &lt;http://www.cdc.gov/nchs/data/statab/natfinal2003.annvol1_16.pdf&gt; you can find some actual statistics: the number of live births in the US for each day of 2003.&nbsp; The most obvious pattern is that there are relatively few births on weekends and holidays, presumably because doctors would not schedule an elective caesarian or induction for those days.&nbsp; There are also seasonal effects: The least popular birthday is December 25 (6628 births), the most popular is December 30 (14438).</p> <p>&nbsp;</p> <p>The &quot;9 months after a holiday&quot; idea is cute, but not really supported by statistics I think.&nbsp; At &lt;http://www.cdc.gov/nchs/data/statab/natfinal2003.annvol1_16.pdf&gt; you can find some actual statistics: the number of live births in the US for each day of 2003.&nbsp; The most obvious pattern is that there are relatively few births on weekends and holidays, presumably because doctors would not schedule an elective caesarian or induction for those days.&nbsp; There are also seasonal effects: The least popular birthday is December 25 (6628 births), the most popular is December 30 (14438).</p> <p>&nbsp;</p> 65163 Thu, 25 Jun 2009 10:08:58 Z Robert Israel Robert Israel