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Probability

• A random variable is a real-valued function whose domain is the sample space of a random experiment.
• The probability distribution of a random variable X is the system of numbers:

 X: x1 x2 … xn P(X): p1 p2 … pn

Where, Here, the real numbers x1, x2, …, xn are the possible values of the random variable X and pi (i = 1, 2, …, n) is the probability of the random variable X taking the value of xi i.e., P(X = xi) = pi

• Mean/expectation of a random variable: Let X…

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