Question: How is the Standard deviation , Variance, DEV^2 and x p(i) derived in the table above? Please explain. Variance & Standard Deviation

How is the Standard deviation , Variance, DEV^2 and x p(i)

How is the Standard deviation , Variance, DEV^2 and x p(i) derived in the table above?

Please explain.

Variance \& Standard Deviation

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