Infant mortality rate and life expectancy at birth are generally: MCQ with Answer and Explanation

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Infant mortality rate and life expectancy at birth are generally:

A. Positively correlated

B. Uncorrelated

C. Negatively correlated

D. Equal

Answer: Option C

Solution (By JKSSB Mock Tests)

Higher IMR is associated with lower life expectancy.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

Which of the following is primary data?

A. Data collected by an investigator through direct interview

B. Data taken from a published report

C. Data from a newspaper

D. Data downloaded from a government website

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Correct Answer: Option A

Explanation:
Primary data is originally collected firsthand for the specific research purpose. Direct interview is a primary method.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Vital registration systems are most effective when they are:

A. Compulsory, universal, and continuous

B. Based on sample surveys

C. Limited to urban areas

D. Voluntary and decentralized

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Correct Answer: Option A

Explanation:
Effective vital registration requires legal mandate for reporting all births/deaths, nationwide coverage, and ongoing operation to provide complete, timely data for demographic analysis and policy.

This question belongs to: Accountancy and Statistics Statistics

Question #3

If events A and B are independent, which of the following must be true?

A. P(A) + P(B) = 1

B. A and B are mutually exclusive

C. P(A ∩ B) = 0

D. P(A|B) = P(A)

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Correct Answer: Option D

Explanation:
Independence means knowledge of B does not affect A's probability, so P(A|B) = P(A); this is equivalent to P(A∩B)=P(A)P(B).

This question belongs to: Accountancy and Statistics Statistics

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