Suppose is a random variable, which follows . Find the covariance between and .
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1 markStatisticsJoint distributions, covariance and correlationCovariance and its propertiesModerateabout 2 min
DSE 2012 Question 9: Joint distributions, covariance and correlation
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Suppose X is a random variable, which follows Uniform[-1,1]. Find the covariance between X and X². (A) 1 (B) 1/4 (C) 1/8 (D) 0
Also written as: Suppose X is a random variable, which follows Uniform[-1,1]. Find the covariance between X and X^2.
Joint distributions, covariance and correlation has come up 61 times in 7 exams since 2005.
What this question tests
This question is on Covariance and its properties, part of Joint distributions, covariance and correlation in Statistics.
How two variables move together and how covariance combines.
TestStop has 9 past-paper questions on this subtopic.
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