Chapter 6: Normal Probability Distributions

There are two standard deviations: One for a population and one for a sample (their formulas differ slightly). We will be calculating the standard deviation of a sample. s x = Ʃ(x- ̅ x ) 2 (n-1) To find standard deviation: Step 1: Find the mean of the numbers. Step 2: For each number (individually), subtract the mean. ................
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