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Bbradley62, on 2014-June-08, 16:31, said:
Maybe I'm a little dense. Why is that funny? Because of 0 adjustment?
I suppose bec phantomsac is Justin.
player skill rank player skill rank
#61
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Posted 2014-June-08, 16:44
I suppose bec phantomsac is Justin.
#62
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Posted 2014-June-08, 16:45
I'm well aware of that. And bboskill rates him as "World Class". Seems right to me.
#63
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Posted 2014-June-08, 17:17
And he does not play in the Acol Club? Amazing! 
(-: Zel :-)
#64
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Posted 2014-June-08, 17:22
"He" has not played for a couple of months. At least not as "he". Being outed does that to you, perhaps.
Psych (pron. saik): A gross and deliberate misstatement of honour strength and/or suit length. Expressly permitted under Law 73E but forbidden contrary to that law by Acol club tourneys.
Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. m
s
t
r-m
nd
ing) tr. v. - Any bid made by bridge player with which partner disagrees.
"Gentlemen, when the barrage lifts." 9th battalion, King's own Yorkshire light infantry,
2000 years earlier: "morituri te salutant"
"I will be with you, whatever". Blair to Bush, precursor to invasion of Iraq
Psyche (pron. sahy-kee): The human soul, spirit or mind (derived, personification thereof, beloved of Eros, Greek myth).
Masterminding (pron. m
str-mnding) tr. v. - Any bid made by bridge player with which partner disagrees."Gentlemen, when the barrage lifts." 9th battalion, King's own Yorkshire light infantry,
2000 years earlier: "morituri te salutant"
"I will be with you, whatever". Blair to Bush, precursor to invasion of Iraq
#65
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Posted 2014-June-09, 06:46
On the normal distribution thing... Assuming you accept the EBU's skill rating system as reasonable (I haven't heard of anything better personally), then it is skewed normal with a heavy tail (that I imagine is there because the graph includes many "non mature" grades). See
https://www.ebu.co.uk/ngs/stats
Nick
https://www.ebu.co.uk/ngs/stats
Nick
"Pass is your friend" - my brother in law - who likes to bid a lot.
#66
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Posted 2014-June-09, 07:41
NickRW, on 2014-June-09, 06:46, said:
On the normal distribution thing... Assuming you accept the EBU's skill rating system as reasonable (I haven't heard of anything better personally), then it is skewed normal with a heavy tail (that I imagine is there because the graph includes many "non mature" grades). See
https://www.ebu.co.uk/ngs/stats
https://www.ebu.co.uk/ngs/stats
The graph would look very normal if the 2 grade was subdivided as the Ace grade is. However, that is probably the result of adding a lot of variables together. Given that distribution of match points on a typical club night looks vaguely normal, adding together lots of these distributions is going to tend to something much more like a normal distribution.
Imagine that every adult in the country was forced to play club bridge for a year. I would expect the EBU gradings distribution would still look normal, but if you extracted the grades for the current club players, i.e. those who have an aptitude and/or interest in the game, their data would now not be normal at all, but a subset of the high ability tail.
#67
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Posted 2014-June-09, 12:35
Question happily withdrawn.
Ken