how far back
I am not a stats guy but pretty close to it. I would say a sample of a few hundred races across a cross section of tracks. It is the cost benefit of doing it. the more data, the better.
My thing is if the take is 16 percent on Win, on average, and rebates come in at 5 (if we are lucky) or a bit less, and we have a positive on this which I doubt, it should be a blind bet. Then I can sleep better. I always want a blind bet. It is lazy but makes sense.
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