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Questions › CUET-PG › CUET-PG 2023 Shift 1 › Q69
4 marks, −1Statistics › Random variables and standard distributions › Expectation and varianceEasyabout 1 min

CUET-PG 2023 Shift 1 Question 69: Random variables and standard distributions

For a random variable X, it is given that E(X2)=16E(X^2) = 16E(X2)=16 and E(X)=2E(X) = 2E(X)=2. What is the value of variance for this distribution?

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For a random variable X, it is given that E(X²) = 16 and E(X) = 2. What is the value of variance for this distribution? (A) 12 (B) 14 (C) 16 (D) 2

Also written as: For a random variable X, it is given that E(X^2) = 16 and E(X) = 2. What is the value of variance for this distribution?

Random variables and standard distributions has come up 173 times in 7 exams since 2005.

What this question tests

This question is on Expectation and variance, part of Random variables and standard distributions in Statistics.

The mean and spread of a random variable, and how they change under transformations and sums.

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Question from the CUET-PG 2023 Shift 1 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.