If each of 20 values is increased by 10, the arithmetic mean will: MCQ with Answer and Explanation
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Question #1
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If two distributions have the same mean but different standard deviations, which statement is TRUE?
Correct Answer: Option A
Explanation:
Standard deviation measures dispersion; a larger SD indicates greater variability of observations around the mean, regardless of the mean's value or distribution shape.
Standard deviation measures dispersion; a larger SD indicates greater variability of observations around the mean, regardless of the mean's value or distribution shape.
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Accountancy and Statistics
Statistics
Question #2
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If the Laspeyres price index is 120 and Paasche price index is 110, Fisher's ideal index is approximately:
Correct Answer: Option B
Explanation:
Fisher's index = √(120 × 110) = √13200 ≈ 114.89 ≈ 114.9. This geometric mean balances the upward bias of Laspeyres and downward bias of Paasche.
Fisher's index = √(120 × 110) = √13200 ≈ 114.89 ≈ 114.9. This geometric mean balances the upward bias of Laspeyres and downward bias of Paasche.
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Accountancy and Statistics
Statistics
Question #3
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Which formula uses the arithmetic mean of base and current year quantities as weights?
Correct Answer: Option C
Explanation:
Marshall-Edgeworth uses the sum (or arithmetic average) of quantities from both years: w = (q0 + q1).
Marshall-Edgeworth uses the sum (or arithmetic average) of quantities from both years: w = (q0 + q1).
This question belongs to:
Accountancy and Statistics
Statistics
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