Life expectancy at age 1 is generally: MCQ with Answer and Explanation

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Life expectancy at age 1 is generally:

A. Higher than life expectancy at birth

B. Equal to life expectancy at birth

C. Lower than life expectancy at birth

D. Zero

Answer: Option A

Solution (By JKSSB Mock Tests)

Due to high infant mortality, survivors to age 1 have a higher remaining life expectancy than newborns.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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If the probability of a student passing an exam is 0.8 and the probability of another student passing is 0.7, and these events are independent, the probability that at least one passes is:

A. 0.94

B. 0.5

C. 0.56

D. 1.5

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Correct Answer: Option A

Explanation:
P(at least one) = 1 - P(both fail) = 1 - (0.2×0.3) = 1 - 0.06 = 0.94.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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A decrease in the crude death rate with an unchanged crude birth rate will cause the rate of natural increase to:

A. Decrease

B. Increase

C. Become zero

D. Remain unchanged

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Correct Answer: Option B

Explanation:
Natural increase = CBR - CDR. If CDR falls, the difference increases.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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In the context of primary data collection, a schedule is:

A. A set of questions filled by the enumerator based on responses from the informant

B. A set of questions filled by the informant

C. A list of topics for group discussion

D. A timetable for data collection

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Correct Answer: Option A

Explanation:
A schedule is administered by an enumerator who records the responses, unlike a questionnaire which is self-administered by the respondent.

This question belongs to: Accountancy and Statistics Statistics

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