The arithmetic mean of 10, 20, 30, 40, 50 is: MCQ with Answer and Explanation
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Question #1
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A life table is primarily based on which of the following demographic measures?
Correct Answer: Option B
Explanation:
Life tables are constructed using Age Specific Death Rates (qx) to determine the probability of surviving from one age to the next.
Life tables are constructed using Age Specific Death Rates (qx) to determine the probability of surviving from one age to the next.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Which index number test checks if P₀₁ × P₁₂ × P₂₀ = 1?
Correct Answer: Option C
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 #3
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A box contains 4 white and 6 black balls. A ball is drawn and not replaced. Then another ball is drawn. The probability that both are white is:
Correct Answer: Option D
Explanation:
(4/10)×(3/9)=12/90=2/15.
(4/10)×(3/9)=12/90=2/15.
This question belongs to:
Accountancy and Statistics
Statistics
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