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046: Perry Kaufman discusses strategy development and the issues and mistakes traders make when creating robust trading strategies.

Better System Trader

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Do I Test Every Five Days?

Every one of those days from 60 to 150 do I test every five days? first I don't Test every day because it's just too much information and unnecessary on the other hand the percentage difference between a 60 in a 65 day moving average or 65 day period is quite different. So clearly you're getting very little change when you go from 145 days to 150 days Compared to 40 to 45 or something like that. The results will fool you If you use this linear distribution so When I do a rough test I might do 30 60 120 and It's only three tests, but each one goes up by a hundred percent and that gives me a much better feel for it You could go up by 50

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