In questionnaire design, which sequence of questions is most recommended? MCQ with Answer and Explanation
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Question #1
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If P(A)=0.5, P(B)=0.4, and P(A∩B)=0.2, then P(A∪B) equals:
Correct Answer: Option C
Explanation:
By addition theorem: P(A∪B) = P(A) + P(B) - P(A∩B) = 0.5 + 0.4 - 0.2 = 0.7.
By addition theorem: P(A∪B) = P(A) + P(B) - P(A∩B) = 0.5 + 0.4 - 0.2 = 0.7.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Assertion (A): The geometric mean is always less than or equal to the arithmetic mean for the same dataset. Reason (R): This is a consequence of the AM-GM inequality in mathematics.
Correct Answer: Option B
Explanation:
The AM-GM inequality states that for non-negative real numbers, the arithmetic mean is always greater than or equal to the geometric mean, with equality only when all values are identical.
The AM-GM inequality states that for non-negative real numbers, the arithmetic mean is always greater than or equal to the geometric mean, with equality only when all values are identical.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If age-specific death rates are applied to a standard population, the resulting rate is called:
Correct Answer: Option C
Explanation:
Direct standardization uses study population's age-specific rates with a standard population structure.
Direct standardization uses study population's age-specific rates with a standard population structure.
This question belongs to:
Accountancy and Statistics
Statistics
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