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Khan Academy
Khan Academy: Statistics: Standard Error of the Mean
Video first briefly reviews the effect on the sampling distribution when the sample size increases then gives the formula for variance of the sample mean of the sampling distribution and formula for standard error of the mean. Uses the...
Khan Academy
Khan Academy: Sampling Distribution: Standard Error of the Mean
Video first briefly reviews the effect on the sampling distribution when the sample size increases then gives the formula for variance of the sample mean of the sampling distribution and formula for standard error of the mean.