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Originally Posted by Chinbok
Hi Xpt,
I noticed you had prices up for a couple of races last Sat. I tried to replicate them from your ratings. It looks as if you lengthen the price for the top rater and shorten the rest. Is that right?
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Gday Chinbok...
no.. what I do is convert the top rater to 100.. so if the top rater is 80 I do this 80/.8 =100.. then fill down that formula for the rest of the race... It makes it easier if the top rater is 100.. and keeps the relativitiy with the rest of the field.
I then use a very simple and very old (rough as well) way of allocating rankings it goes like this.. goit it froma well known racing mag actually.. 100,75,56,42,32,24,18,13,10,8,6,4,3,2,1
I will skip a rank if there is a gap of 10 or so points (on the converted rating)
You then total the rankings... Say the total is 400.. U then divide the 400 by each individual horse ranking.. So if the horse ranking is 100 .. the assessed price is $4.00 if it is 75 it is $5.3 and so on.. That will give you a 100% market
To replicate the TABS around the place I then divide the assessed price by 1.18 should give you a 118% market or there abouts...
All prices are to 1 decimal point
See attached for the last Race at Rocky today to get an idea of how I do it
Hope that helps a bit