For mutually exclusive events A and B with P(A)=0.4, P(B)=0.3, P(A∪B) is: MCQ with Answer and Explanation
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Question #1
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Which index number test checks if P₀₁ × P₁₂ × P₂₀ = 1?
Correct Answer: Option A
Explanation:
The circular test verifies consistency across three periods: the product of indices linking 0→1, 1→2, and 2→0 should equal 1 (or 100³ in percentage terms), ensuring transitivity in comparisons.
The circular test verifies consistency across three periods: the product of indices linking 0→1, 1→2, and 2→0 should equal 1 (or 100³ in percentage terms), ensuring transitivity in comparisons.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Life expectancy at birth is calculated from a:
Correct Answer: Option C
Explanation:
Life expectancy is derived from a life table, which summarizes mortality rates at each age.
Life expectancy is derived from a life table, which summarizes mortality rates at each age.
This question belongs to:
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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