If P(A)=0.6, P(B)=0.5, P(A∩B)=0.4, then P(A|B) is: MCQ with Answer and Explanation

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If P(A)=0.6, P(B)=0.5, P(A∩B)=0.4, then P(A|B) is:

A. 0.67

B. 0.8

C. 0.75

D. 0.4

Answer: Option B

Solution (By JKSSB Mock Tests)

P(A|B) = P(A∩B)/P(B) = 0.4/0.5 = 0.8.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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In the schedule method, the presence of the enumerator helps in:

A. Reducing non-response

B. Clarifying doubts

C. Ensuring completeness

D. All of the above

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Correct Answer: Option D

Explanation:
The enumerator can probe, clarify, and ensure all questions are answered, improving data quality.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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The 'stub' of a table refers to:

A. The box-head

B. The row headings (left part)

C. The title

D. The column headings

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Correct Answer: Option B

Explanation:
The stub is the leftmost column containing the row captions or descriptions.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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In an examination, 60% candidates passed in English (A), 50% in Math (B), and 30% in both (AB). Are attributes A and B independent?

A. Yes, they are independent

B. No, they are negatively associated

C. No, they are positively associated

D. Data is inconsistent

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Correct Answer: Option A

Explanation:
P(A) * P(B) = 0.6 * 0.5 = 0.3. Since P(AB) = 0.3, they are perfectly independent.

This question belongs to: Accountancy and Statistics Statistics

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