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how do i calculate sample size in excel. This equation is for an unknown population size or a very large population size. Note down the value of E.
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N 1 n 2. Calculate the mean simple average of the five numbers. N population size e Margin of error percentage in decimal form z z-score.
From each number subtract the mean to find the differences.
N 1 n 2. So now that I have focused on the value that is closest to 50 I can say what sample size I need. Work out the average of the squared differences. Note down the value of P.
