# Bridge Winners Profile for André Blanchet

André Blanchet
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Member Since
June 28, 2017
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5 hours ago
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bridge player

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Statistics on trumps splits in BBO
Personally, if I flip a coin 10 times and it falls on tails 10 times, no doubt I will be suspicious of the coin! Same thing in a casino's craps game: suspicion is that the dices' center of gravity is shifted towards the 6, which then has more chances ...
Statistics on trumps splits in BBO
What is OP?
Statistics on trumps splits in BBO
Statistics on trumps splits in BBO
Whatever my opinion is, it is based on mathematics. What is yours based on?
Statistics on trumps splits in BBO
To those who question the statistical significance of the observations I made on BBO's trumps splits, I've digged into the theory of statistics and came up with the following. A z-test is a statistical test for which the distribution of the test statistic under the null hypothesis can ...
Statistics on trumps splits in BBO
Some readers have questionned the statistical significance of the observations I made on BBO's trumps splits, calling them "anecdotal". So of course, I've digged into the theory of statistics and came up with the following (I've added this as a reply somewhere, I'm repeating it here ...
Statistics on trumps splits in BBO
A z-test is a statistical test for which the distribution of the test statistic under the null hypothesis can be approximated by a normal distribution. If we consider the null hypothesis as "BBO's occurrences of 3-2 splits follow the laws of probability", then we can use a one-proportion z-test ...
Statistics on trumps splits in BBO
My stats courses at school are quite far back in my memory (close to 40 years), but I'll investigate and come back with an answer. I think a Chi-Squared Test might apply, because I remember it is used to determine the adequacy of observed data versus theoretically expected data ...
Statistics on trumps splits in BBO
Thanks for your offer Richard. In your Recent Hands, you could note, for the side who played the hand, the break(s) that occurred on each hand for 8, 9 and 10 cards fit (if a hand has a double-fit, please note both breaks), then paste in here the bunch ...
Statistics on trumps splits in BBO
Your English is not bad at all! Indeed, considering a Binomial Distribution with p = 0.678 and n = 609, we get a Standard Deviation Sqrt(p(1-p)/n) of 1.9%. In BBO, the occurrence of 3-2 breaks, based on 609 eight-cards fits, is .639 rather than .678; that's ...
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