Net Reproduction Rate (NRR) differs from Gross Reproduction Rate (GRR) because NRR takes into account: MCQ with Answer and Explanation

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Net Reproduction Rate (NRR) differs from Gross Reproduction Rate (GRR) because NRR takes into account:

A. Migration rates

B. Mortality rates of mothers

C. Male births

D. Economic status

Answer: Option B

Solution (By JKSSB Mock Tests)

NRR adjusts the GRR by factoring in the probability that a female child will survive through her reproductive years.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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A sample space has 6 equally likely outcomes. The probability of an event with 2 outcomes is:

A. 2/3

B. 1/6

C. 1/2

D. 1/3

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Correct Answer: Option D

Explanation:
P = 2/6 = 1/3.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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The combined mean of two groups is 55, with n₁=40, mean₁=50. If n₂=60, mean₂ is:

A. 60

B. 58.33

C. 59

D. 57.5

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Correct Answer: Option B

Explanation:
55 = (40×50 + 60×x) / 100 → 2000 + 60x = 5500 → 60x = 3500 → x = 58.33.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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If the crude birth rate of a country is 25 and crude death rate is 10, and net migration rate is -2 per 1000, the growth rate is:

A. 15 per 1000

B. 13 per 1000

C. 17 per 1000

D. 37 per 1000

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Correct Answer: Option B

Explanation:
Growth rate = 25 - 10 + (-2) = 13 per 1000.

This question belongs to: Accountancy and Statistics Statistics

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