Life expectancy at birth is calculated using: MCQ with Answer and Explanation

Life expectancy at birth is calculated using:
A. Infant mortality rate
B. Fertility rates
C. Age-specific death rates in a life table
D. Crude death rate only
Answer: Option C
Solution (By JKSSB Mock Tests)
Life expectancy is derived from a life table that uses age-specific death rates to compute survival probabilities and average remaining lifetime for a hypothetical cohort.

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Practice More Statistics Questions

Question #1
Perinatal Mortality Rate is a key indicator for:
A. Environmental pollution levels
B. Educational attainment
C. Economic growth
D. Effectiveness of maternal and newborn health interventions around childbirth

Correct Answer: Option D


Explanation:
Perinatal mortality reflects the quality of antenatal care, skilled attendance at birth, and immediate newborn care, making it a sensitive measure for evaluating maternal-child health programs.

This question belongs to: Accountancy and Statistics Statistics
Question #2
Assertion (A): Median is better than Mean for skewed distributions. Reason (R): Median is entirely immune to extreme values.
A. A is true but R is false
B. Both A and R are true and R is the correct explanation
C. A is false but R is true
D. Both A and R are true but R is NOT the correct explanation

Correct Answer: Option B


Explanation:
Median is a positional average based on rank, so an extreme outlier does not shift the median's location.

This question belongs to: Accountancy and Statistics Statistics
Question #3
Which of the following is NOT a source of primary data?
A. Interviews conducted by the researcher
B. A questionnaire filled by the respondent online
C. An experiment conducted in a lab
D. Census of India 2011 data used by a demographer

Correct Answer: Option D


Explanation:
Census data is already published; it is secondary data for a demographer.

This question belongs to: Accountancy and Statistics Statistics