The total population of a country at a given time is essentially affected by: MCQ with Answer and Explanation
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Question #1
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The geometric mean is equal to the arithmetic mean when:
Correct Answer: Option D
Explanation:
AM = GM if and only if all numbers are identical.
AM = GM if and only if all numbers are identical.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Fisher's ideal index satisfies which tests?
Correct Answer: Option D
Explanation:
Fisher's index is the geometric mean of Laspeyres and Paasche and satisfies both the time reversal and factor reversal tests.
Fisher's index is the geometric mean of Laspeyres and Paasche and satisfies both the time reversal and factor reversal tests.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If P(A) = 0.6, P(B) = 0.7, and P(A ∪ B) = 0.9, then P(A ∩ B) is:
Correct Answer: Option C
Explanation:
By addition theorem: P(A∪B) = P(A) + P(B) - P(A∩B) → 0.9 = 0.6 + 0.7 - P(A∩B) → P(A∩B) = 1.3 - 0.9 = 0.4.
By addition theorem: P(A∪B) = P(A) + P(B) - P(A∩B) → 0.9 = 0.6 + 0.7 - P(A∩B) → P(A∩B) = 1.3 - 0.9 = 0.4.
This question belongs to:
Accountancy and Statistics
Statistics
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