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Search: Posts Made By: Arpad
Forum: Psychology and Money Management April 27th, 2011, 06:29 AM
Replies: 204
Views: 64,747
Posted By Arpad
What would be the best equation to measure a system?

Hi Fat Tails,

Thanks for clarifying things.

In a later study Van Tharp introduced the System Quality Number:

SQN = (Expectancy / Standard Deviation of R) * square root of Number of...
Forum: Psychology and Money Management April 24th, 2011, 04:24 PM
Replies: 204
Views: 64,747
Posted By Arpad
Average profit vs. average profit per dollar risked – which one is more useful?

You could look at expectancy as a measure of the average profit, as you say and as it is stated on the wiki of this website.
You could, if it makes sense. Probably it does.
However, another...
Forum: Psychology and Money Management April 24th, 2011, 03:31 PM
Replies: 204
Views: 64,747
Posted By Arpad
Expectancy formula

Fat Tails,

This does not double your expectancy.

Expectancy =

(Average Profit * Probability of Winning) – (Average Loss * Probability of Losing)...
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