Life expectancy at birth is the: MCQ with Answer and Explanation

Life expectancy at birth is the:
A. Number of years a newborn is expected to live under current mortality patterns
B. Median age of the population
C. Average age at death of a cohort
D. Maximum age a person can live
Answer: Option A
Solution (By JKSSB Mock Tests)
Life expectancy at birth summarizes the age-specific mortality rates in a given period into a single synthetic measure.

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Practice More Statistics Questions

Question #1
The infant mortality rate in India (SRS 2020) is around:
A. 33 per 1000
B. 28 per 1000 live births
C. 40 per 1000
D. 50 per 1000

Correct Answer: Option B


Explanation:
As per SRS 2020, India's IMR was 28 per 1000 live births.

This question belongs to: Accountancy and Statistics Statistics
Question #2
Population density is highest in regions with:
A. Political instability
B. Arid climate and poor soil
C. High altitude and extreme temperatures
D. Fertile land, water availability, and economic opportunities

Correct Answer: Option D


Explanation:
Population density correlates with habitability factors: fertile soil, water, moderate climate, and jobs attract settlement, leading to high density in river valleys, coasts, and urban centers.

This question belongs to: Accountancy and Statistics Statistics
Question #3
Assertion (A): Fisher's ideal index satisfies both time reversal and factor reversal tests. Reason (R): Fisher's index is the geometric mean of Laspeyres and Paasche indices. Choose the correct option:
A. A is true, R is false
B. A is false, R is true
C. Both A and R are true, but R is not the correct explanation of A
D. Both A and R are true, and R is the correct explanation of A

Correct Answer: Option D


Explanation:
Fisher's index indeed satisfies both tests, and the formula (geometric mean) is the reason it meets these tests.

This question belongs to: Accountancy and Statistics Statistics