If all observations are multiplied by a constant k, the geometric mean is multiplied by: MCQ with Answer and Explanation
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Question #1
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If P(A) = 0.5, P(B) = 0.3, and P(A∪B) = 0.7, then P(A|B) equals:
Correct Answer: Option A
Explanation:
P(A∩B)=0.5+0.3-0.7=0.1. P(A|B)=0.1/0.3≈0.333.
P(A∩B)=0.5+0.3-0.7=0.1. P(A|B)=0.1/0.3≈0.333.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Geometric mean is most appropriate for averaging:
Correct Answer: Option D
Explanation:
Geometric mean correctly averages multiplicative processes (e.g., compound growth rates) by taking the nth root of the product, avoiding bias from arithmetic mean in ratio contexts.
Geometric mean correctly averages multiplicative processes (e.g., compound growth rates) by taking the nth root of the product, avoiding bias from arithmetic mean in ratio contexts.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Cost of Living Index adjustments are most relevant for:
Correct Answer: Option C
Explanation:
Cost of Living Indices inform wage indexation, pension adjustments, and welfare benefits to maintain purchasing power amid inflation, directly impacting household economic security.
Cost of Living Indices inform wage indexation, pension adjustments, and welfare benefits to maintain purchasing power amid inflation, directly impacting household economic security.
This question belongs to:
Accountancy and Statistics
Statistics
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