If Net Reproduction Rate (NRR) < 1, the population in the long run will: MCQ with Answer and Explanation
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Question #1
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The dependency ratio is the ratio of:
Correct Answer: Option B
Explanation:
Dependency ratio = (population 0-14 + 65+) / (population 15-64), measuring economic burden.
Dependency ratio = (population 0-14 + 65+) / (population 15-64), measuring economic burden.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Harmonic mean is used to average speeds when:
Correct Answer: Option A
Explanation:
For equal distances, average speed = total distance / total time = harmonic mean of speeds; arithmetic mean would overestimate if speeds vary.
For equal distances, average speed = total distance / total time = harmonic mean of speeds; arithmetic mean would overestimate if speeds vary.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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A speaks truth in 70% cases, B in 80% cases. In what percentage of cases are they likely to contradict each other in stating the same fact?
Correct Answer: Option A
Explanation:
Contradiction = P(A truth and B lie) + P(A lie and B truth) = 0.7×0.2 + 0.3×0.8 = 0.14+0.24=0.38=38%.
Contradiction = P(A truth and B lie) + P(A lie and B truth) = 0.7×0.2 + 0.3×0.8 = 0.14+0.24=0.38=38%.
This question belongs to:
Accountancy and Statistics
Statistics
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