Vital statistics are essential for calculating which of the following?
A. Life expectancy
B. Literacy rate
C. Poverty headcount ratio
D. Gross Domestic Product
Answer: Option A
Solution (By JKExamLibrary)
Life expectancy is derived from life tables constructed using age-specific death rates, which rely on vital statistics data on deaths and population by age.
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.
A.Both A and R are true, and R is the correct explanation of A
B.A is true but R is false
C.Both A and R are true, but R is not the correct explanation of 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.
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.
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