TFR of 2.1 children per woman is called replacement-level fertility because it: MCQ with Answer and Explanation

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TFR of 2.1 children per woman is called replacement-level fertility because it:

A. Results in zero population growth in the long run

B. Equals NRR=1 exactly

C. Doubles population

D. Ensures population decline

Answer: Option A

Solution (By JKSSB Mock Tests)

TFR of about 2.1 ensures each generation exactly replaces itself (assuming low mortality), leading to eventual zero growth.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

The complement of the event 'at least one head' in two coin tosses is:

A. At least one tail

B. Two heads

C. No heads (both tails)

D. Exactly one head

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Correct Answer: Option C

Explanation:
Complement of 'at least one head' is 'no heads'.

This question belongs to: Accountancy and Statistics Statistics

Question #2

A questionnaire that allows the respondent to write answers in his own words contains:

A. Ranking questions

B. Closed-ended questions

C. Open-ended questions

D. Multiple choice questions

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Correct Answer: Option C

Explanation:
Open-ended questions allow free expression without predefined options.

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Question #3

If two attributes have perfect positive association, then:

A. (AB) = 0

B. (αβ) = 0

C. (A) = (B)

D. (AB) = (A) = (B)

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Correct Answer: Option D

Explanation:
Perfect positive association means all A's are B's and all B's are A's, so (AB) equals both marginals.

This question belongs to: Accountancy and Statistics Statistics

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