What is the standard deviation of the following data set? 8, 2, 9, 10, 6

What is the standard deviation of the following data set? 8, 2, 9, 10, 6

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Find the mean: xbar Subtract the mean from each data point. (x1-xbar),(x2-xbar)...etc Square the difference. (x1-xbar)^2,(x2-xbar)^2..etc Take the average of the square differences [(x1-xbar)^2+(x2-xbar)^2+...+(xn-xbar)]/n Take the square root of that average.

i have to answer dont know if there right though 40 or 8

or 10

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