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December 5th, 2012, 06:12 PM  #1 
Newbie Joined: Dec 2012 Posts: 3 Thanks: 0  Sample size question
There's a story behind this, but I'm doing a little personal project and I'm trying to make a case about something statistically. I've taken an intro to stats class, and either I never learned what I need, or I cannot remember/find it. Anyways, I have a population of 6139 that is not normally distributed, and from which I can randomly draw as many samples as I want (and they will be random). What is the minimum number of items I need to draw for significant result? 
December 6th, 2012, 12:35 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,805 Thanks: 716  Re: Sample size question
There is no exact number. The more samples you draw, the more significant will the answer. Also are you looking for a good estimate of the distribution or will you be satisfied with good estimates for the mean and variance.

December 6th, 2012, 10:05 PM  #3 
Newbie Joined: Dec 2012 Posts: 3 Thanks: 0  Re: Sample size question
Sorry, yes, I wanted a number that would give me a very good estimate of the distribution without having me simply go through all of the individual samples. Thanks. 

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