Green is in the group of 10 officials that will be reffing the East semifinals and final this weekend.
@TC4THREE
I know you are a diehard Boiler fan.. what's the consensus on your boards on your potential to New Orleans and beyond??
Green is in the group of 10 officials that will be reffing the East semifinals and final this weekend.
I think it’s less about favoring teams and more about the spreadsI agree that refs impact games, but not because of “bias” ie “Courtney Greene hates Purdue” or “Bo Boroski hates Rutgers” … it’s rather their style of reffing, which they don’t change depending on the matchup (can argue if that’s good or bad, separate issue)… Boroski calls tons of fouls, and especially when there’s acting/embellishment going on … this really hurts RU, because 1) we are a physical team, and 2) Pikiell is all class and doesn’t teach our guys to flail about and flop like other teams seem to do to us all the time (especially Iowa).
like someone said in a reply tweet, Greene doesn’t call a lot of fouls inside, which hurts Purdue which is a team that has Big men that they dish to and use often, and allows underdogs to keep it closer
Bad analysis because Purdue isn't the only team flipping coins. If 358 people are all flipping coins then it's almost a certainty at least one will have a run of 1 heads, 14 tails. Don't have the energy to do the math now.
Sample size isn’t the issue. You are correct that sample size is accounted for in the p-value.im not convinced it’s a bad analysis just based on the small sample size. small sample size is taken into account in the probability formula. with a small sample size, it takes much more deviation from ‘random’ to achieve the p<.05
The Purdue fan base is one that is constantly waiting for the other shoe to drop. We've been a very good basketball team over the last 40 years and had several years where we could've gone to the Final Four or possibly even won a national championship but we've seen us fall short in a variety of ways for a variety of reasons. I think most of us believe we're the best team left in the East region but are fearful of what's going to happen this year. Since last going to the Final Four in 1980 (before I can remember) we've seen the following:@TC4THREE
I know you are a diehard Boiler fan.. what's the consensus on your boards on your potential to New Orleans and beyond??
I did the math in my post. The p-value is for a single ref. He looked at 8 refs.fluox...not sure your logic holds either. p value indicates the liklihood that the null hypothesis is true, which in this case is 'no ref bias'. Here, a p value is .0375, which is below the standard .05 accept/reject threshold. The null hypothesis is rejected, and there is scientifically-supported evidence of bias. It's weakly stastically significant, but still significant by accepted standards
Had he looked at 300 refs and found just 1 of them to have lopsided ATS outcomes, then the p value would be much, much lower....like .005 which much more convincing. But .0375 is still highly convincing, enough to overturn the null hypoth.
I don't get where your 25% comes into play. Nothing suggests (to me) that there's a 25% chance of a p = .0375. That's not how it works.
Your 'two heads in a row' analogy is wrong. Yes 25% chance that happens, but not the same as 1 of 8 refs with ATS outcomes so skewed.
To me, fly in the ointment is that there are multiple refs in each game, so the ability of just one of them to steer a score margin is limited.
Not seeing it that way…but l don’t really care. What is your reasoning to multiply the p value times n ?To extend this a bit further, this guy found 8 refs that did at least 20 Purdue games over the last 5 years. If you assume there is an average of 8 such refs for each of the 358 Division I schools, then you have 2,864 school/ref combos. You would expect to find 102 (2864 * 3.57%) school/ref pairs with results at least this extreme due to randomness alone. You would have a >50% chance (51.13% to be exact) of finding at least one ref/school pair with a p-value of <= .00025 by pure randomness alone.
There were 8 refs that met the criteria…so 8 chances of finding the one “outlier).Not seeing it that way…but l don’t really care. What is your reasoning to multiply the p value times n ?
Because there are n of them..Not seeing it that way…but l don’t really care. What is your reasoning to multiply the p value times n ?
Ok, now I'm finally calling bs. I finally see what you're arguing. That has nothing to do with p value. you think p value is probability of an event. that's wrong. A shooting percentage isn't a p value.Because there are n of them..
If someone takes 100 3 pointers and they are a 33% shooter, how many do you expect them to make?
Hint: the “p-value” of an experiment where that guy takes 1 3 pointer and makes it is 0.33
Lol ok then, have funOk, now I'm finally calling bs. I finally see what you're arguing. That has nothing to do with p value. you think p value is probability of an event. that's wrong. A shooting percentage isn't a p value.
p value represents the probability of different outcomes belonging to different populations/outcomes.
your p value isn't a comparison.
In null-hypothesis significance testing, the p-value[note 1] is the probability of obtaining test results at least as extreme as the results actually observed, under the assumption that the null hypothesis is correct.Try researching it, and then let me know when you find out that p value is the probability of an event. No rush.
Right, and that is not the probability of an event, of shooting percentage, etc. Thanks for discrediting yourself and citing exactly what I tried to explain to you.In null-hypothesis significance testing, the p-value[note 1] is the probability of obtaining test results at least as extreme as the results actually observed, under the assumption that the null hypothesis is correct.
p-value - Wikipedia
en.m.wikipedia.org
Lol. You must have been a treat for your teachers in school.Right, and that is not the probability of an event, of shooting percentage, etc. Thanks for discrediting yourself and citing exactly what I tried to explain to you.
In theory if the guy hated Purdue he probably can’t make them lose every game but if his calls are biased against them they would do worse when he refs than expected. This would show up in the ATS record with less noise than the actual record (because every spread should be roughly 50/50 whereas you would need to have some model for what the expected actual win percentage would be).Beyond the statistical analysis why would a corrupt ref show disfavor towards one team, not in wins and losses but ATS? For betting purposes? If so then wouldn't it be much less noticeable if the games were chosen at random? Or does he only like to win $$$ when Purdue doesn't cover?
True and I was reading through and didn't feel like going back to see the W-L record.In theory if the guy hated Purdue he probably can’t make them lose every game but if his calls are biased against them they would do worse when he refs than expected. This would show up in the ATS record with less noise than the actual record (because every spread should be roughly 50/50 whereas you would need to have some model for what the expected actual win percentage would be).
But that’s just in theory. In practice what the guy found isn’t remotely interesting for the reasons explained by my posts and also illustrated by the excellent xkcd comic that kcg88 posted.
Yeah not sure if that was OPs implication. If so, I agree with you, seems like it would make more sense not to bet against the same team every time lolTrue and I was reading through and didn't feel like going back to see the W-L record.
But the "scary" stuff seemed to be centered around the ATS record with the implication being that the ref is doing this for betting purposes.
Yeah not sure if that was OPs implication. If so, I agree with you, seems like it would make more sense not to bet against the same team every time lol
While interesting and able to frame this idea better, the goal was to find refs who produce strange results. So find every team and every game that suspect refs produce such results and see if it happens many times, across teams and conferences. Perhaps it is only really good teams that present such an opportunity. Purdue is a high-scoring team that results in big spreads... maybe it is easier to manipulate that.. and more rewarding.. without risking changing the outcome of the game in a win/loss scenario.If you flip each coin 28 times.
# coins Prob at least one gets <=8 or >=20 heads 1 3.57% 2 7.01% 3 10.33% 4 13.53% 5 16.62% 8 25.23% 10 30.47% 15 42.02% 25 59.69% 50 83.75% 100 97.36%
Where there's one, there's more..Can we have the names of the schools that Courtney Greene favors over Purdue