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Home Questions XBQ7Z29BTF
Target Exam

CUET

Subject

-- Mathematics - Section B2

Chapter

Probability Distributions

Question:

Match List-I with List-II

Let X be a discrete random variable and $P(X=x_i)=p_i$.

List-I List-II
A E(X) I $∑x^2_ip_i-(∑x_ip_i)^2$
B $E(X^2)$ II $∑x_ip_i$
C $σ^2_x$ (Variance) III $\sqrt{∑x^2_ip_i-(∑x_ip_i)^2}$
D $σ_x$ (Standard Deviation ) IV $∑x_i^2p_i$

Choose the correct answer from the options given below :

Options:

A-III, B-IV, C-I, D-II

A-IV, B-II, C-I, D-III

A-II, B-IV, C-III, D-I

A-II, B-IV, C-I, D-III

Correct Answer:

A-II, B-IV, C-I, D-III

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