If Net Reproduction Rate (NRR) is less than 1, the population will eventually: MCQ with Answer and Explanation

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If Net Reproduction Rate (NRR) is less than 1, the population will eventually:

A. Decrease

B. Increase

C. Remain constant

D. Become zero

Answer: Option A

Solution (By JKExamLibrary)

NRR < 1 indicates each generation is not replacing itself, leading to decline.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

The formula for weighted arithmetic mean is:

A. Σw / Σx

B. Σwx / n

C. Σwx / Σw

D. Σx / Σw

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Correct Answer: Option C

Explanation:
Weighted mean = Σ(w_i x_i) / Σ w_i.

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Question #2 Report Error

If P(A)=0.6, P(B)=0.5, P(A∩B)=0.4, then P(A|B) is:

A. 0.67

B. 0.75

C. 0.4

D. 0.8

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Correct Answer: Option D

Explanation:
P(A|B) = P(A∩B)/P(B) = 0.4/0.5 = 0.8.

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Question #3 Report Error

Which of the following is true for an ideal index number?

A. It should be easy to calculate.

B. It should use only base period weights.

C. It must be a simple average of relatives.

D. It must satisfy time reversal and factor reversal tests.

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Correct Answer: Option D

Explanation:
Fisher's ideal index satisfies both tests; these are desirable properties.

This question belongs to: Accountancy and Statistics Statistics

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