Post Utme Bowen University 2021 Mathematics Question 30

Practice objective / multiple choice question 30 from the 2021 Post Utme Bowen University Mathematics examination.

Post Utme Bowen University 2021 Mathematics Objective / Multiple Choice

Question 30 POST_UTME_BOWEN_UNIVERSITY • 2021 • MATHEMATICS • objective

A random variable ( X ) has a probability distribution given by \(P X = x \\) = egin{cases} 0.4 & \text{if } \(x = 1\) \ 0.3 & \text{if } \(x = 2\) \ 0.3 & \text{if } \(x = 3\) \ 0.0 & \text{otherwise} \end{cases} ). Find the variance of ( X ).

Answer Options

A. 0.2

B. 0.5

Correct Answer C. 1.0

D. 1.5

Correct Answer

Correct Option:

1.0

About This Question

This is Post Utme Bowen University 2021 Mathematics Question 30. It is one of the objective questions from the 2021 Post Utme Bowen University Mathematics examination.

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Post Utme Bowen University 2021 Mathematics Question 30

A random variable ( X ) has a probability distribution given by \(P X = x \\) = egin{cases} 0.4 & \text{if } \(x = 1\) \ 0.3 & \text{if } \(x = 2\) \ 0.3 & \text{if } \(x = 3\) \ 0.0 & \text{otherwise} \end{cases} ). Find the variance of ( X ).

Answer Options

About This Question

Master the Exam!

A random variable ( X ) has a probability distribution given by \(P X = x \\) = egin{cases} 0.4 & \text{if } \(x = 1\) \ 0.3 & \text{if } \(x = 2\) \ 0.3 & \text{if } \(x = 3\) \ 0.0 & \text{otherwise} \end{cases} ). Find the variance of ( X ).