Which of the following is a necessary condition for consistency of data for two attributes? MCQ with Answer and Explanation
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Question #1
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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 D
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.
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Accountancy and Statistics
Statistics
Question #2
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Vital statistics are primarily concerned with:
Correct Answer: Option B
Explanation:
Vital statistics deal with vital events such as births, deaths, marriages, and divorces.
Vital statistics deal with vital events such as births, deaths, marriages, and divorces.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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The sex ratio at birth biologically is approximately:
Correct Answer: Option C
Explanation:
Naturally, around 105 male births occur for every 100 female births.
Naturally, around 105 male births occur for every 100 female births.
This question belongs to:
Accountancy and Statistics
Statistics
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