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

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Life expectancy at birth is calculated from a:

A. Life table

B. Fertility survey

C. Census

D. Sample survey

Answer: Option A

Solution (By JKSSB Mock Tests)

Life expectancy is derived from a life table, which summarizes mortality rates at each age.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

A coin is tossed three times. What is the probability of getting exactly two heads?

A. 3/8

B. 5/8

C. 1/2

D. 1/8

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Correct Answer: Option A

Explanation:
Sample space has 8 outcomes. Favorable (HHT, HTH, THH) = 3. Probability = 3/8.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Which of the following is NOT a method of collecting primary data?

A. Interview method

B. Observation method

C. Using published government reports

D. Schedules sent through enumerators

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Correct Answer: Option C

Explanation:
Using published government reports is a source of secondary data. The other methods involve collecting data firsthand.

This question belongs to: Accountancy and Statistics Statistics

Question #3

If the median of a dataset is 40 and the first quartile is 30, the third quartile is 50. The interquartile range is:

A. 10

B. 40

C. 20

D. 80

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Correct Answer: Option C

Explanation:
IQR = Q3 - Q1 = 50-30 = 20.

This question belongs to: Accountancy and Statistics Statistics

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