Question: Find the variance of a random variable using X having the following probability distribution. The random variable X has expected value E(x)=-1.6. x P(X=x) -4

Find the variance of a random variable using X having the following probability distribution. The random variable X has expected value E(x)=-1.6.

x P(X=x)
-4 0.6
0 0.2
4 0.2

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