Vital statistics are essential for calculating which of the following? MCQ with Answer and Explanation
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Question #1
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In a frequency distribution with exclusive class intervals 0-10, 10-20, 20-30, a value exactly equal to 20 should be included in:
Correct Answer: Option B
Explanation:
In exclusive classification, the upper limit is excluded; thus 20 belongs to the class 20-30.
In exclusive classification, the upper limit is excluded; thus 20 belongs to the class 20-30.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Assertion (A): For independent events A and B, P(A|B) = P(A). Reason (R): Independence implies that knowledge of B does not change the probability of A.
Correct Answer: Option A
Explanation:
By definition, if A and B are independent, the conditional probability P(A|B) equals the unconditional probability P(A), as the occurrence of B provides no information about A.
By definition, if A and B are independent, the conditional probability P(A|B) equals the unconditional probability P(A), as the occurrence of B provides no information about A.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Which measure of central tendency is defined only when all observations are positive?
Correct Answer: Option A
Explanation:
Geometric mean requires all positive values; otherwise it's undefined or zero. Harmonic mean also requires non-zero values, but GM is more restricted. Actually, GM is defined only for positive data if we want real numbers. So C.
Geometric mean requires all positive values; otherwise it's undefined or zero. Harmonic mean also requires non-zero values, but GM is more restricted. Actually, GM is defined only for positive data if we want real numbers. So C.
This question belongs to:
Accountancy and Statistics
Statistics
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