Comments on: ECF Grading – Statistical Distribution http://www.bluehorizonweb.com/blog/2008/03/grading/ecf-grading-statistical-distribution/ The journey of a patzer Thu, 12 Jan 2012 00:33:16 +0000 http://wordpress.org/?v=2.8.4 hourly 1 By: Daniel http://www.bluehorizonweb.com/blog/2008/03/grading/ecf-grading-statistical-distribution/comment-page-1/#comment-18787 Daniel Thu, 12 Jan 2012 00:33:16 +0000 http://www.bluehorizonweb.com/blog/?p=27#comment-18787 <strong>Hi...</strong> http://www.webcamgirls4.com/... Hi…

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]]> By: Paul McKeown http://www.bluehorizonweb.com/blog/2008/03/grading/ecf-grading-statistical-distribution/comment-page-1/#comment-357 Paul McKeown Sat, 20 Dec 2008 17:55:55 +0000 http://www.bluehorizonweb.com/blog/?p=27#comment-357 The distribution is "left-handed" because of the existence of large sub-pool, that of juniors. Most of these are rubbish and won't improve and will eventually drop out of the list, out of lack of interest; some though are not rubbish, but have lowish grades, and those grades will move into their proper places on the right hand of the distribution as they play (and gain points from) adults. The distribution is “left-handed” because of the existence of large sub-pool, that of juniors. Most of these are rubbish and won’t improve and will eventually drop out of the list, out of lack of interest; some though are not rubbish, but have lowish grades, and those grades will move into their proper places on the right hand of the distribution as they play (and gain points from) adults.

]]> By: Carsten http://www.bluehorizonweb.com/blog/2008/03/grading/ecf-grading-statistical-distribution/comment-page-1/#comment-278 Carsten Mon, 28 Jul 2008 16:20:56 +0000 http://www.bluehorizonweb.com/blog/?p=27#comment-278 Dave I never really realised just how "lefthanded" the distribution is before. When you say "This allows us to break down all UK club/tournament players into percentiles" be careful. The ECF grading list includes all players who've played in graded events, including non-UK players. For example, only one of the top 10 players (Adams) is English, the rest have simply played in the UK in the last year but are definitely not UK players. Just having a quick look at the top I'd say that to get into the top 100 you probably need a grade of about 209-210. I'm sure the grades for all your percentiles should be a bit lower than you show, so you're probably a couple of percentage points better than your own calculations! Dave

I never really realised just how “lefthanded” the distribution is before.

When you say “This allows us to break down all UK club/tournament players into percentiles” be careful. The ECF grading list includes all players who’ve played in graded events, including non-UK players. For example, only one of the top 10 players (Adams) is English, the rest have simply played in the UK in the last year but are definitely not UK players.

Just having a quick look at the top I’d say that to get into the top 100 you probably need a grade of about 209-210.

I’m sure the grades for all your percentiles should be a bit lower than you show, so you’re probably a couple of percentage points better than your own calculations!

]]> By: Will http://www.bluehorizonweb.com/blog/2008/03/grading/ecf-grading-statistical-distribution/comment-page-1/#comment-252 Will Thu, 05 Jun 2008 09:58:25 +0000 http://www.bluehorizonweb.com/blog/?p=27#comment-252 I would really like a copy of this diagram to compare to the USCF graph I already have. I don't agree with the current formula's to convert ECF to FIDE I would really like a copy of this diagram to compare to the USCF graph I already have. I don’t agree with the current formula’s to convert ECF to FIDE

]]> By: David David http://www.bluehorizonweb.com/blog/2008/03/grading/ecf-grading-statistical-distribution/comment-page-1/#comment-249 David David Thu, 29 May 2008 12:25:45 +0000 http://www.bluehorizonweb.com/blog/?p=27#comment-249 Is a grading system rather than elo better for club chess. I'm not too bright at maths so you'd have to explain why it might be better/worse. Would a grading system be better than elo on an internet chess site. Again if so why? Elo seems a good general measure but in a clearly defined context the idea of grading seems better. Or is there no real difference...remeber if you answer: I'm thick! <em>[Both Elo and ECF are grading systems, just that the formula used in each case is somewhat different. Which is better is rather subjective, ECF is easier to work out, but Elo perhaps gives a better distribution. - Dave]</em> Is a grading system rather than elo better for club chess. I’m not too bright at maths so you’d have to explain why it might be better/worse.

Would a grading system be better than elo on an internet chess site. Again if so why? Elo seems a good general measure but in a clearly defined context the idea of grading seems better. Or is there no real difference…remeber if you answer: I’m thick!

[Both Elo and ECF are grading systems, just that the formula used in each case is somewhat different. Which is better is rather subjective, ECF is easier to work out, but Elo perhaps gives a better distribution. - Dave]

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