mcd said:Hayek, you are right about the 22.5 calculation which made no difference to the point I was making. BTW, by accout I guess you meant account and by expectany I guess you meant expectancy right? As I stated from the outset, it was simply an assumption. I was illustrating a way of assessing trading results that some may find useful in the very real world of trading (if they have not come across it already). Didn't quite see the relevance or usefulness to the rest of your reply and I was a little surprised to see you kick the academic skirting board without stating your purpose. If you want a pointless theoretical debate pop down to your local student union bar where I'm sure they'll oblige . For those who prefer real world applications which may improve their actual trading results, there is a good article worth reading here: http://tradermike.net/2004/05/trading_101_expectancy.html
What a sensitive MAN you are! I didn't write any word to illustrate your calculating was wrong. I just remind the thread starter if he trades frequently he may not only focus on the expectancy of profits each time.