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Statisticians, to me!

Started by Berkut, February 13, 2012, 03:10:54 PM

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Berkut

OK, according to rpiforeceast.com, these are the odds that Arizona wins their next 5 games:

rpiforecast.com

60% chance of a win @Wazzu
47% chance of a win @UW
92% chance of a win USC
67% chance of a win UCLA
83% chance of a win @ASU

I want to know what the over all odds are of Arizona winning:

5 games
4 games
3 games
2 games
1 game

Please show your work. Pay for the first correct answer is one million fake internet dollars.
"If you think this has a happy ending, then you haven't been paying attention."

select * from users where clue > 0
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DGuller

Yeah, I'm so not doing that.  There are no shortcuts that I can see, you're going to have to evaluate each possible combination of the 5 games.  If the odds were the same for each game, then it would be a relatively simple probability problem.

katmai

They aren't going to tourney, so don't even worry about it :P
Fat, drunk and stupid is no way to go through life, son

Admiral Yi

All 5 is easy.

.6*.47*.92*.67*.83= 14%

DGuller

To give an outline of how you would get an answer, it's not hard, just tedious.  There are 32 possible results, and for each of those 32 results you multiply the probabilities of the 5 events.  Use given probabilities if game X is a win in one of those 32 combinations, or 1 - probability if it's a loss.  Then sum the products up by the number of wins.  I could probably do it in 5-10 minutes in Excel, but frankly it's too boring.

Berkut

Quote from: DGuller on February 13, 2012, 03:30:49 PM
To give an outline of how you would get an answer, it's not hard, just tedious.  There are 32 possible results, and for each of those 32 results you multiply the probabilities of the 5 events.  Use given probabilities if game X is a win in one of those 32 combinations, or 1 - probability if it's a loss.  Then sum the products up by the number of wins.

:huh:

QuoteI could probably do it in 5-10 minutes in Excel, but frankly it's too boring.

:cry:
"If you think this has a happy ending, then you haven't been paying attention."

select * from users where clue > 0
0 rows returned

Berkut

Two million fake internet dollars?
"If you think this has a happy ending, then you haven't been paying attention."

select * from users where clue > 0
0 rows returned


grumbler

5 games = c. 19%
4 games = c. 25%
3 games =  c. 31%
2 games = c. 20%
1 game = c. 5%

That's be 2 million internet dollars, please.
The future is all around us, waiting, in moments of transition, to be born in moments of revelation. No one knows the shape of that future or where it will take us. We know only that it is always born in pain.   -G'Kar

Bayraktar!

DGuller

Fuck you, Berkut.

Wins        Probability
0   0.000951
1   0.019790
2   0.128147
3   0.334805
4   0.372032
5   0.144275

DGuller

Quote from: grumbler on February 13, 2012, 03:40:10 PM
5 games = c. 19%
4 games = c. 25%
3 games =  c. 31%
2 games = c. 20%
1 game = c. 5%

That's be 2 million internet dollars, please.
And fuck you grumbler.  Hopefully Berkut requires the answers to be correct in order to claim the price, or I got screwed out of 2 mil.  :(

Berkut

"If you think this has a happy ending, then you haven't been paying attention."

select * from users where clue > 0
0 rows returned


frunk

DGuller's numbers are right, but only if I get a share of the internet money.

DGuller

Are you trying to arbitrage the bookies, Berkut?  :ph34r: