27th March 2011, 02:38 PM
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Banned
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Join Date: Jan 1970
Posts: 868
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Quote:
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Originally Posted by wesmip1
I like plotting the distribution as it makes it easy to see the issues. The way I plotted your data Cols G and H as a scatter plot with smooth lines connecting them .
Looking at it I am slightly worried in the distribution on the losing side. It looks like it needs a few more data points to smooth that out. The problem you have at the moment is the tail on the positive side is much higher then the negative side. I would question why this is the case and what I find is this occurs with backfitted systems (not saying yours is). You will at some point have the same losses on the negative side and these are seriously going to dent any of your profits.
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wesmip1 if i could pick your brain - do you put more emphasis/importance on standard deviation/distributions than the chi-test?
for example if a chi-test shows <1% due to luck but the bell chart is marginally biased to the negative side, which would you pay most attention to or do you consider them equally important?
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