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OT: Experiment, please give your input...

Started by Eirik, December 02, 2003, 07:58:28 PM

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Eirik

December 02, 2003, 07:58:28 PM
I work with a statistician who told me today that in any group of 30 people, there is like a 99.999% chance that two of them will have the same birthday (same date, not necessarily year).  He explained the math of it, but I didn't really understand how it brought him to his conclusion.  There are 34 people in our office, so he told me randomly eliminate 4 people and test it out.  The second person I talked to had the same birthday as me!

Please post your birthday and we'll see if there are any duplicates in the first 30 respondants...  Mine is April 3rd.

Ash

#1
December 02, 2003, 08:22:27 PM
April 19th

daveblackeye15

#2
December 02, 2003, 08:28:32 PM
July 21.

Now it's time to sing the nation anthem IN AMERICA!!!

Bandit Keith from Yu-Gi-Oh the Abridged Series (episode 12)

FearlessFreep

#3
December 02, 2003, 08:29:31 PM
If I say April 19th are we done?

Neon Noodle

#4
December 02, 2003, 10:06:57 PM
November 12th

____________________________________________________________
While on a journey, Chuang Tzu found an old skull, dry and parched.
With sorrow, he questioned and lamented the end of all things.
When he finished speaking, he dragged the skull over and, using it for a pillow, lay down to sleep.
In the night, the skull came to his dreams and said, 'You are a fool to rejoice in the entanglements of life.'
Chuang Tzu couldn`t believe this and asked, 'If I could return you to your life, you would want that, wouldn`t you?'
Stunned by Chuang Tzu`s foolishness, the skull replied, 'How do you know that it is bad to be dead?'

-From The Matrix: The Path of Neo

Susan

#5
December 02, 2003, 10:07:47 PM
Not sure about that theory. I have 70+ people in my office and we have a birthday list, nobody shares the same birthday

Scott

#6
December 02, 2003, 11:40:29 PM
We do share common birthdays (earthly birth)  with many others on this planet.

World Population - 6,333,599,551

Days in the Year - 365

Ellie

#7
December 03, 2003, 12:48:12 AM
January 17th

wickednick

#8
December 03, 2003, 01:01:56 AM
may 9th

Smells like popcorn and shame

Cricket21a

#9
December 03, 2003, 05:04:28 AM
September 4th

****************************************

I think computer viruses should count as life. I think it says something about human nature that the only form of life we have created so far is purely destructive. We've created life in our own image.
Stephen Hawking

Neville

#10
December 03, 2003, 07:54:47 AM
April 17th. Now if you had been born two days before, ASHTHECAT, the experiment would be over. LOL

Due to the horrifying nature of this film, no one will be admitted to the theatre.

Mr_Vindictive

#11
December 03, 2003, 08:46:05 AM
April 29thNeville wrote:

__________________________________________________________
"The greatest medicine in the world is human laughter. And the worst medicine is zombie laughter." -- Jack Handey

A bald man named Savalas visited me last night in a dream.  I think it was a Telly vision.

ulthar

#13
December 03, 2003, 10:10:22 AM
Susan wrote:

> Not sure about that theory. I have 70+ people in my office and
> we have a birthday list, nobody shares the same birthday
>

Well, that's the thing about statistics...they make a prediction within some level of confidence.  The prediction that 1 person in 30 will share a birthday is based on "I am sure of this to x.x%," and x can NEVER be 100%.  Obviously, your office lies outside the confidence interval of the prediction.  That does not invalidate his analysis nor his prediction (but he SHOULD state his confidence interval to clarify the reliability of his prediction).

------------------------------------------------------------------------------------------------

Professor Hathaway:  I noticed you stopped stuttering.
Bodie:      I've been giving myself shock treatments.
Professor Hathaway: Up the voltage.

--Real Genius

ulthar

#14
December 03, 2003, 10:12:33 AM

15 October

------------------------------------------------------------------------------------------------

Professor Hathaway:  I noticed you stopped stuttering.
Bodie:      I've been giving myself shock treatments.
Professor Hathaway: Up the voltage.

--Real Genius
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