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

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Life expectancy at birth is computed using:

A. Census only

B. Life table

C. Sample survey

D. Birth registration

Answer: Option B

Solution (By JKSSB Mock Tests)

Life table synthesizes age-specific mortality rates to compute life expectancy.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

The mode of the dataset 2, 3, 5, 5, 7, 7, 7, 9 is:

A. 5

B. 7

C. Both 5 and 7

D. 7.7

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Correct Answer: Option B

Explanation:
7 appears three times, more than any other value, so mode = 7.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Infant Mortality Rate (IMR) is calculated as:

A. Deaths under 1 year / Mid-year population under 1 × 1,000

B. Maternal deaths / Live births × 100,000

C. Deaths under 1 year / Total births × 1,000

D. Deaths under 5 years / Live births × 1,000

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Correct Answer: Option C

Explanation:
IMR = (Number of infant deaths (under 1 year) in a year / Number of live births in the same year) × 1,000. It is a sensitive indicator of healthcare quality and socioeconomic conditions.

This question belongs to: Accountancy and Statistics Statistics

Question #3

Which measure of central tendency minimizes the sum of absolute deviations?

A. Geometric mean

B. Median

C. Arithmetic mean

D. Mode

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Correct Answer: Option B

Explanation:
Median minimizes Σ|x - M|, while mean minimizes Σ(x - μ)².

This question belongs to: Accountancy and Statistics Statistics

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