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Number of samples needed for statistics

How many samples are needed for statistics?

Not determined

Everyone knows that the results of inferential statistics carry a margin of error.  What is sample size determination?  This represents the act of choosing the number of observations or replicates to include in a statistical sample.  There are some methods to follow.  For example, lowering the level of confidence will give us a smaller margin of error.  On the other hand, increasing the sample size will always decrease the margin of error.  There are also other determinant factors to consider – costs or feasibility.

This fact is verified on : August 7, 2013.

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