Which of the following can be a probabil

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Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Probability

Question:

Which of the following can be a probability distribution function for a random variable X ?

X	0	1	2
P(x)	0.4	0.4	0.2

X	1	2	3	4
P(x)	0.1	0.4	0.3	-0.2

X	1	2	3	4
P(x)	1/5	2/5	1/5	1/5

X	0	1	2	3
P(x)	0.2	0.3	0.2	0.2

X	1	2	3
P(x)	1/3	2/3	1/3

Choose the correct answer from the options given below

Options:

B, D, E only

A, C, D only

B, C, D only

A, D, E only

Correct Answer:

A, C, D only

Explanation:

B. can't be the Probability Distribution form for random variable X as it contains negative value.