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Questions › DSE › DSE 2010 › Q12
1 markStatistics › Random variables and standard distributions › Random variables, PMFs, PDFs and CDFsModerateabout 3 min

DSE 2010 Question 12: Random variables and standard distributions

Suppose a random variable XXX takes values −2,0,1-2,0,1−2,0,1 and 444 with probabilities 0.4,0.1,0.30.4,0.1,0.30.4,0.1,0.3 and 0.20.20.2 respectively.

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Suppose a random variable X takes values -2,0,1 and 4 with probabilities 0.4,0.1,0.3 and 0.2 respectively. (A) The unique median of the distribution is 1 (B) The unique median of the distribution is 0 (C) The unique median of the distribution lies between 0 and 1 (D) The distribution has multiple medians

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

What this question tests

This question is on Random variables, PMFs, PDFs and CDFs, part of Random variables and standard distributions in Statistics.

Describing a random variable by its mass, density or distribution function.

TestStop has 33 past-paper questions on this subtopic.

Practise Random variables and standard distributionsMore on Random variables, PMFs, PDFs and CDFs

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Question from the DSE 2010 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.