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August 5th, 2013, 04:19 PM  #1 
Senior Member Joined: Jan 2013 Posts: 113 Thanks: 0  Sufficient Sample Size for Binomial Distribution
Hey guys, I was just wondering how I should go about calculating the minimum sample size required to achieve a fairly strong significance in my test results. I must admit, my statistics is quite out of touch, and I would *love* a really simplified explanation. Thanks all. 
August 6th, 2013, 12:55 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,732 Thanks: 689  Re: Sufficient Sample Size for Binomial Distribution
For the binomial distribution, ? = ?{p(1p)/n}, where ? is the standard deviation, n is the sample size, and p is the probability of success. Therefore given p, you choose n based on how good you want your estimate to be.


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