Ratings Variance

very interesting keep up the good work,cheers Stuarty

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I have re-recorded the video and it is back up online

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It seems that our video has been removed and we cannot find a copy of it. I am very unhappy about this but I will, of course, make a new one. Please give me a few days to put it together and I shall post another comment as soon as it is ready and uploaded.

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The video is not there anymore.

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Thank you

Stu.

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Michael, as always, a very interesting post on variance. I look at Ron Robinson’s ratings on post racing and am often surprised at his selections, which appear to come from nowhere (and often win or place at good odds). I am starting to see how such horses can be selected. Thanks very much.

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Good question. I have found that 10% provides a good range in the past and so I always start there, however this is going to be dependent on the ratings you are using. The best would be to start at 10% and then test what happens with a smaller range and a bigger range until you hit on the best range for your rating.

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why did you start at 10%
why not say 5% or 2.5%.
is there any signifigance to the 10%?

thanks Stu.

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is there anyone that could show me how to do these calculations? on excel 2007 / 2010

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I,for one, am finding these videos very informative,what sort of a dummy was I being before?

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