Things I learned today (Part 1)

[Mac]

[QUOTE=“TreatyStones, post: 963841, member: 1786”]But let’s work out the probability that everyone in that group of 23 has a unique birthday.

[LIST]
[]For person 1, the chances are 100% because every date is clear. For person two, there’s one day they would share with person 1, but the other 364 are clear, so their chance of a unique birthday is 364/365. For person 3 it’s 363/365, and so on through to person 23, whose probability of having a unique birthday is 343/365.
[/LIST]
[LIST]
[]To find the probability of everyone in the group having unique birthdays, we multiply all those 23 probabilities together, and if we do we end up with a probability of 0.491.
[/LIST]
[LIST]
[*]The probability that a birthday is shared is therefore 1 - 0.491, which comes to 0.509, or 50.9%.
[/LIST]
[/QUOTE]

That’s utter utter bollox!

[TreatyStones]

@Mac

That’s utter utter bollox!

Is it?

[Horsebox]

@TreatyStones

Is it?

Yes.

[Mac]

@TreatyStones

Is it?

If you put 23 printers into a room, whats the probability that one of them will break on a unique day?

[Thrawneen]

@caoimhaoin

You missed my sarcasm so ya? It was a comment as opposed to a response.

Must’ve done alright, Kevo.

[TreatyStones]

@Mac

If you put 23 printers into a room, whats the probability that one of them will break on a unique day?

I’ve looked it up and it’s called The Birthday Paradox. It’s a mathematical fact.

[TreatyStones]

@Mac

If you put 23 printers into a room, whats the probability that one of them will break on a unique day?

What? The likelihood of a printer breaking is directly related to the “urgency” of the document being printed and the cuntishness of the person who requires it.

[tallback]

@Mac

That’s utter utter bollox!

The Birthday Paradox. Google it.

[ciarancareyshurlingarmy]

Probability theory is very interesting and lucrative information for those who understand it.

[fistoffury]

@TreatyStones

The internet, they then applied that theory to the world cup panels (as there is 23 players per panel) and would you believe that of the 32 teams, 16 of them contained players sharing the same birthday.

Hardly a fair sample.

[Mac]

June 21st may be the longest day of the year, but June 24th has the latest sunset of the year and is thus the longest evening.

[Mark_Renton]

@Mac

June 21st may be the longest day of the year, but June 24th has the latest sunset of the year and is thus the longest evening.

Ffs. You hanicap.

[Mac]

@Mark Renton

Ffs. You hanicap.

Oh the ironing

[TheUlteriorMotive]

Brendan Lynch from Kerry is the only player to win a 60 minute, 70 minute and 80 minute All Ireland Final. He also lost a 60 minute, 70 minute and 80 minute AI final.

[Blake]

I think the fact that the sample is exclusively footballers skewers the theory @TreatyStones. I remember reading an article a few years ago that stated that professional footballers are more likely to be born in the months September to November due to the fact they will be marginally older than those in their age group and will therefore stand out more. Obviously this effect wears out over time, but nonetheless would allow a young lad to stand out at an early age and thereby gain access to superior development.

[TreatyStones]

The theory is not exclusive to footballers . they merely applied an existing theory to the world cup squads

[The_Scouse_Cafu]

@Blake

I think the fact that the sample is exclusively footballers skewers the theory @TreatyStones. I remember reading an article a few years ago that stated that professional footballers are more likely to be born in the months September to November due to the fact they will be marginally older than those in their age group and will therefore stand out more. Obviously this effect wears out over time, but nonetheless would allow a young lad to stand out at an early age and thereby gain access to superior development.

Off the top of my head I can think of two players - Diego Maradona and Tony Cascarino, that would bear this theory out.

[TheUlteriorMotive]

The most popular tourist attraction in the world is The Dubai Mall.

[Mullach_Ide]

@TheUlteriorMotive

Brendan Lynch from Kerry is the only player to win a 60 minute, 70 minute and 80 minute All Ireland Final. He also lost a 60 minute, 70 minute and 80 minute AI final.

I’d say Frank Cummins did the same in hurling.

[Mark_Renton]

The average time an inter county hurler had on the ball in the 80s was 4 seconds. The average time a player has now is 1.9seconds…it’s heading to 1.6 seconds in a few years.