NRR = 0.8 means: MCQ with Answer and Explanation

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NRR = 0.8 means:

A. High growth

B. Each generation is not replacing itself

C. Population is stable

D. Population is doubling

Answer: Option B

Solution (By JKSSB Mock Tests)

NRR < 1 indicates population decline in the long run.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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If every observation in a dataset is doubled, the arithmetic mean:

A. Increases by 2

B. Becomes half

C. Remains unchanged

D. Is also doubled

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Correct Answer: Option D

Explanation:
Mean is affected by change of scale; multiplying by 2 scales the mean by 2.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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According to Census 2011, the population density of India (persons per sq km) is:

A. 324

B. 282

C. 382

D. 455

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Correct Answer: Option C

Explanation:
The population density of India in 2011 was 382 persons per square kilometer.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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Laspeyres price index uses which quantity weights?

A. Current period quantities

B. Geometric mean of quantities

C. Average of base and current quantities

D. Base period quantities

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Correct Answer: Option D

Explanation:
Laspeyres index = Σ(p₁q₀)/Σ(p₀q₀) × 100, using base period quantities (q₀) as weights, which may overstate inflation if consumers substitute away from goods with rising prices.

This question belongs to: Accountancy and Statistics Statistics

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