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Entropy of N random variables is the _____ of the entropy of individual random variable.

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Entropy of N random variables is the _____ of the entropy of individual random variable.

(a) Sum

(b) Product

(c) Sum of squares

(d) Average

The question was posed to me in an interview for job.

The origin of the question is Modulation and Entropy in portion Modulation and Coding Trade-off of Digital Communications

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Right answer is (a) Sum

Explanation: Entropy of N random variables is the sum of the entropy of individual random variable.

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