If Net Reproduction Rate (NRR) = 1.2, it means: MCQ with Answer and Explanation

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If Net Reproduction Rate (NRR) = 1.2, it means:

A. The population has reached replacement level.

B. Each generation is replacing itself and increasing by 20%.

C. The infant mortality rate is zero.

D. The population will immediately decline.

Answer: Option B

Solution (By JKSSB Mock Tests)

NRR > 1 indicates the next generation is larger by 20%, leading to population growth.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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The Paasche price index tends to ______ the true increase in prices if consumers substitute away from goods that have become more expensive.

A. Overstate

B. Exactly measure

C. Not measure

D. Understate

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Correct Answer: Option D

Explanation:
Paasche uses current period quantities; substitution away from expensive items reduces their weight, leading to understatement.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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A random variable X takes values 0,1,2 with probabilities 0.3,0.5,0.2. The expected value E(X) is:

A. 0.9

B. 1.0

C. 0.8

D. 1.1

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Correct Answer: Option A

Explanation:
E(X) = 0×0.3 + 1×0.5 + 2×0.2 = 0 + 0.5 + 0.4 = 0.9.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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A card is drawn from a standard deck. Probability it is a king or a heart is:

A. 17/52

B. 1/4

C. 16/52

D. 4/13

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Correct Answer: Option C

Explanation:
P(king ∪ heart) = P(king) + P(heart) - P(king of hearts) = 4/52 + 13/52 - 1/52 = 16/52.

This question belongs to: Accountancy and Statistics Statistics

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