If A and B are independent, then P(A|B) equals: MCQ with Answer and Explanation

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If A and B are independent, then P(A|B) equals:

A. P(B)

B. P(A) + P(B)

C. P(A)

D. P(A∩B)

Answer: Option C

Solution (By JKSSB Mock Tests)

Independence means the occurrence of B does not affect the probability of A.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

The difference between the upper limit and the lower limit of a class interval is called:

A. Magnitude or Width of the class

B. Class mark

C. Class frequency

D. Class boundary

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Correct Answer: Option A

Explanation:
The magnitude or width is the size of the class interval, calculated as Upper Limit - Lower Limit.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Yule's coefficient of association Q is calculated using frequencies from a:

A. Scatter plot

B. 2×2 contingency table for two binary attributes

C. Time series data

D. Frequency distribution table

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Correct Answer: Option B

Explanation:
Yule's Q = [(AB)(αβ) - (Aβ)(αB)] / [(AB)(αβ) + (Aβ)(αB)], requiring the four cell frequencies of a 2×2 table cross-classifying two dichotomous attributes.

This question belongs to: Accountancy and Statistics Statistics

Question #3

The time reversal test is satisfied by which of the following weighted index formulas?

A. Fisher

B. Laspeyres

C. Both A and C

D. Paasche

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Correct Answer: Option A

Explanation:
Only Fisher's index satisfies time reversal; L and P do not.

This question belongs to: Accountancy and Statistics Statistics

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