25th July 2011, 05:30 AM
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Member
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Join Date: Jan 1970
Posts: 4,440
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Quote:
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Originally Posted by 4legs
Below is the result based on 711 races using Betfair SP at 10 seconds before close and the final SP.
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This might be why the results your were expecting are not showing.
Comparing the last traded price would be much better, because you are currently comparing the predicted SP with the actual SP.
This in itself is flawed, because the predicted SP is based on a different formula to the actual SP, therefore any difference will be the calculation rather than the movement.
I would also set the seconds to more like 30 or 60 to get more of an indication. |