Sigma in Summation & Standard Deviation

Introduction Previous lessons demonstrated the use of the standard normal distribution. While distributions with a mean of 0 and a standard deviation of. - ppt download

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Standard deviation for continuous distribution

SOLVED: A sample of n = 6 scores has a standard deviation of s = 3. What is the value of SS, the sum of the squared deviations for this sample?

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What is the significance of the sigma symbol in calculating the formula for standard deviation? Why is it used instead of other symbols like epsilon or pi? - Quora

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