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intradaybill
 

Registered: Feb 2008
Posts: 2962

 

06-28-12 05:37 PM


Quote from gifropan:

Beflore your refer to this as crap, with all due respect, you need to learn some probability and game theory.



Really? What do you think you know about probability theory? Which of the four definitions of probability you like the most and why? This is the problem with you people. You know nothing and you have an attitude instead of thanking those that try to help you.

Prove that the win rate of a system is stationary and I can accept your formula. Maybe you do not understand what stationarity means. Regardless your ignorance about this, do you know how many tosses it takes for a biased coin with prob of heads equal to 35% to converge to that number within 1%? Or are you so naive to think that the win rate will be such even in the first 10 tosses?

I mean, if you do not udnerstand what I wrote and you think I need to learn probability you are in for big surprises wtith your trading. I mean big, very big. That is if you trade...

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mind
 

Registered: Nov 2003
Posts: 785

 

07-02-12 07:16 PM


Quote from intradaybill:

[B]This is the problem with you people. You know nothing and you have an attitude instead of thanking those that try to help you.


you have some funny way of trying to help people.

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Random.Capital
 

Registered: Jan 2005
Posts: 3848

 

07-02-12 07:36 PM


Quote from gifropan:


Getting back to the markets, if the probability of you winning a trade is 50% provided your winning trades win more than your losing trades lose theoretically you should make money over time.



Not in the real world.

In the real world, if you trade a 50/50 system with any kind of size, you will blow up.

It's not a question of if, it's a question of when.

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RangeTrader
 

Registered: Mar 2012
Posts: 705

 

07-02-12 07:40 PM

Money management was originally invented by brokers and taught to amateur traders so that their traders would lose money more "slowly" and generate more commissions...

It's a load of horse sh*t.

Learn to play with high odds. Use the right leverage ratios for your account size that you can swing the entire trading range and have stops outside the trading range.

In low volatility bull markets the trading range is around 15-25 handles. In bear markets it can go upto 100. During this recent correction period from april till recently the range was around 30-50 handles.

I'm referring to the week to week ranges, not the day to day...

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murray t turtle
 

Registered: Dec 2001
Posts: 6273

 

07-02-12 07:48 PM


Quote from market_man76:

I you have a positive expectancy over the course of all trades it matters not whether 70%/winners 30%/losers or vice versa with 30%/winners 70%/losers. or any other combination.

If the end result is a positive expectancy then money management(AKA position sizing) can help the account grow astronomically.

If the end result is not a positive expectancy then money management/position sizing will not save it.

So step one is make sure your trading has a positive outcome overall through the life of your trading activity. whether you trade a system or discretionary.

Only then can you move to step two, which is to size your positions based on the value of your account using some method that you are comfortable with, suchs as fixed fraction, fixed ratio or rules that you come up with.


==========
Nice,clear, crystal clear points.

But i think Dr.Van Tharp[book]is right in that a 50/50[excuse the word ''random ''entry can be profitable '' Now, dont think he was recommending a ''random ''entry . Nor would i recommend a ''random''entry. LOL

Even though in the 1998, 1999 trends[200 dma] which is near when most of his books were written; lots of stuff worked , like 2008, worked well. Wisdom is profitable to direct.

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