Statistics - 5.1.2 Variance and Standard Deviation of Discrete Probability Distributions

[@richardiqal]

Are you sure your formulas are correct? You divide by n, not multiply by the probability, maybe?

[@SawFinMath]

I believe the formulas are correct. Since it is a discrete distribution (not uniform or normal), the probabilities are an important part!

[@richardiqal]

Thx! I just realized my mistake