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Guest Message by DevFuse
 

Tom Mercer

Member Since 25 Sep 2013
Offline Last Active Sep 29 2013 08:12 PM
-----

Posts I've Made

In Topic: Birthday Distribution

29 September 2013 - 08:13 PM

Ok, to bound the question further, what is the probability that 20 people have no birthdays for 124 CONSECUTIVE days of the year (any 124 consecutive days, to avoid the post-hoc errors plasmid describes).

I'm looking for some explanation 1. is this distribution unlikely (how unlikely) 2. why/how could this happen - self-selection through interviews...

I'm baffled. This is the office where I work, and I know it's statistically significant, but don't know how unlikely this is. I'm also curious what could cause this? Is this a known trait of other offices or social groups?

Gladwell's book talks about athletes getting selected for size, which means almost all NHL players are born during 3 months. However, I can't think of anything in an office that would anti-select for 4 months of the year, especially given that the office is mixed gender and mixed nationality and mixed ethnicity.

What's going on here?


In Topic: Birthday Distribution

25 September 2013 - 03:53 AM

There are only these 20 people / birthdays. Each date is one person. It's in 2013 because LibreOffice spreadsheet where I wrote down the birthdays has to have a year. You can ignore the year 13.