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what is the formula for mean of sample. It is given by the formula. X n are different values.
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Let X 1 X 2 X n be a random sample of size n from a distribution population with mean m and variance s 2. Text Sample Mean of Grouped Data frac 1 Nsumlimits_ i1 k M_ icdot f_ i Sample Mean of Grouped Data N 1. In Mathematical terms sample mean formula is given as.
Sample Mean and Population Mean Formula.
That is we have shown that the mean of X is the same as the mean of the individual X i. Sample mean is represented by the symbol x. The sample size of more than 30 represents as n. This article tells you how to find the sample mean by hand this is also one of the AP Statistics formulas.
