Question: A random variable X that assumes the values x 1 , x 2 , . . . , x k is called a discrete uniform

A random variable X that assumes the values x₁, x₂, . . . , x_k is called a discrete uniform random variable if its probability mass function is f(x) = 1/k for all of x₁, x₂, . . . , x_k and 0 otherwise. Find the mean and variance of X.

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