Question

Explain vjarvsndnz

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Maths class
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Best n correct answer will be marked as brainliest!!!

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Answer 1

Answer:

The variance of random variable X is often written as Var(X) or σ2 or σ2x.

For a discrete random variable the variance is calculated by summing the product of the square of the difference between the value of the random variable and the expected value, and the associated probability of the value of the random variable, taken over all of the values of the random variable.