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what is the sample mean formula. N z 2 s 2 N N - 1 ME 2 z 2 s 2 N - 1. And the last formula optimum allocation uses stratified sampling to minimize variance given a fixed budget.
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Finally the formula for confidence interval can be calculated by subtracting and adding the margin of error step 5 from and to sample mean step 1 as shown below. . But that does not affect the calculations.
The formula to find the sample mean is.
But that does not affect the calculations. It is given by the formula The capital Greek letter sigma 𝚺 is commonly used in mathematics to represent a summation of all the numbers in a grouping. X 1n i 1 n x. It is a measure of central tendency and is used for statistical inferential.
