Sample Mean And Sample Variance
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Sample Mean And Sample Variance. It is an absolute measure of . A sample is a select number of items taken from a population.

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The sample variance, s2, is used to calculate how varied a sample is. Two samples can have the same mean but be distributed very differently. If all possible observations of the system are present then the calculated variance is called the . Our result indicates that as the sample size n increases, the variance of the sample mean decreases.
