The main source of population data in India is: MCQ with Answer and Explanation
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Question #1
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If P(A)=0.5, P(B)=0.4, and P(A∩B)=0.2, then P(A∪B) equals:
Correct Answer: Option D
Explanation:
By addition theorem: P(A∪B) = P(A) + P(B) - P(A∩B) = 0.5 + 0.4 - 0.2 = 0.7.
By addition theorem: P(A∪B) = P(A) + P(B) - P(A∩B) = 0.5 + 0.4 - 0.2 = 0.7.
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Accountancy and Statistics
Statistics
Question #2
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In questionnaire design, what is the primary purpose of pre-testing?
Correct Answer: Option D
Explanation:
Pre-testing a questionnaire with a small pilot group helps detect unclear wording, logical flaws, or response issues, ensuring the instrument is valid and reliable for the main survey.
Pre-testing a questionnaire with a small pilot group helps detect unclear wording, logical flaws, or response issues, ensuring the instrument is valid and reliable for the main survey.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Chain base index numbers are calculated by:
Correct Answer: Option C
Explanation:
Chain indices compute period-to-period changes (e.g., 2021/2020, 2022/2021) and chain them multiplicatively, allowing flexibility but complicating long-term interpretation due to changing bases.
Chain indices compute period-to-period changes (e.g., 2021/2020, 2022/2021) and chain them multiplicatively, allowing flexibility but complicating long-term interpretation due to changing bases.
This question belongs to:
Accountancy and Statistics
Statistics
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