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Hi Howard,


As always, Many Thanks for such a detail reply!!! 


Just for my understanding, once my system is ready for trading, the final step will be to backtest it on my out-of-sample data. From this backtesting, I will then know the % of losing trades. (for this example lets assume 40%)


Then, using your formula (0.4)^n, I should keep increasing the value of 'n' until the result is the first one below 0.05 which at that point will give me the number of losing trades at which I should seriously considering switching the system off.


Is this correct?


Kind Regards,


Chorlton


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