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Coin flips to reach 50-50 distribution
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Coin flips to reach 50-50 distribution

  #1 (permalink)
Market Wizard
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Coin flips to reach 50-50 distribution

How many coin flips result in a statistical 50-50 H&T distribution?

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  #2 (permalink)
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  #3 (permalink)
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At least 2 coin flips, at most, infinity .... and beyond!

What are you asking ?

Math. A gateway drug to reality.
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  #4 (permalink)
Elite Member
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aligator View Post
How many coin flips result in a statistical 50-50 H&T distribution?

There was a thread on coin flips here. Though it may not answer your question.

https://futures.io/off-topic/6430-stupid-probability-questions.html

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  #5 (permalink)
Fortitudo et Honor
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The question needs to be adjusted.

Most everything in prob/stat has confidence intervals associated with it.

The original response has merit. The event probability will continue to approach the "true" probability as n events approaches infinity.

So in order to answer your question, you have to establish your "tolerance" level.

How many events are required to get an event probability that's "close" to the outcome probability within say 5% confidence interval?


I'm not going to pull out my texts to do the calculations, but for a binomial, you can calculate the overall event probability based off the number of the sampling....

so the output would look something like 50% +/- x%, where x gets smaller as n gets larger.

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Coin Flips

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aligator View Post
How many coin flips result in a statistical 50-50 H&T distribution?

It took me 98 flips

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  #7 (permalink)
Market Wizard
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traderwerks View Post
At least 2 coin flips, at most, infinity .... and beyond!
fear
What are you asking ?

The question is a simple one. In truth, the real answer is that for a 50-50 chance all you need is only one flip since flipping a coin is a single event and there are only two possibilities. This is the only answer with a 100% confidence level. Any more flips will change the probabilities which will eventually converge to 50/50 if you are willing to explore the infinity. However, if there was an infinity out there perhaps we would not call it infinity anymore, a paradox.

The point here is successful traders don't trade statistics, they trade opportunities and expect only two outcomes. We can't have useful stats for trading since they must include variables such as fear, greed, ego, intuition, experience, and stupidity.

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  #8 (permalink)
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This is 1 excel sheet that I like very much .. It use random coin tosses to create charts
Believe it or not, you might see support/resistance, trends, and many technical formation .....
Enjoy

this is a xlsm file for excel 2007 or 2010

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Last edited by AkLio; April 5th, 2011 at 06:18 PM.
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