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Questions › CUET-PG › CUET-PG 2024 › Q52
4 marks, −1Statistics › Random variables and standard distributions › Expectation and varianceEasyabout 1 min

CUET-PG 2024 Question 52: Random variables and standard distributions

If Y=20+10XY = 20 + 10XY=20+10X, then Var(Y)Var(Y)Var(Y) is

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If Y = 20 + 10X, then Var(Y) is (A) 100· Var(X) (B) 10· Var(X) (C) 400 + 100· Var(X) (D) 20 + 10· Var(X)

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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