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

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Life expectancy at birth is calculated from:

A. Age-specific death rates through a life table

B. Total fertility rate

C. Crude birth rate

D. Census data only

Answer: Option A

Solution (By JKSSB Mock Tests)

Life tables use 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

If the variance of a dataset is 16, the standard deviation is:

A. 256

B. 8

C. 2

D. 4

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Correct Answer: Option D

Explanation:
SD = √variance = 4.

This question belongs to: Accountancy and Statistics Statistics

Question #2

The dependency ratio measures the ratio of:

A. Non-working age population to working-age population

B. Female to male population

C. Unemployed to employed population

D. Rural to urban population

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Correct Answer: Option A

Explanation:
Dependency ratio = (Population under 15 + Population over 65) / Population aged 15-64.

This question belongs to: Accountancy and Statistics Statistics

Question #3

Which measure of central tendency is the most stable from sample to sample?

A. Mode

B. None

C. Median

D. Mean

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Correct Answer: Option D

Explanation:
The arithmetic mean is based on all observations and has the smallest sampling variance among unbiased estimators of the population mean.

This question belongs to: Accountancy and Statistics Statistics

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