Life expectancy at birth is denoted in a life table by: MCQ with Answer and Explanation

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Life expectancy at birth is denoted in a life table by:

A. T_0

B. e°_0

C. q_0

D. l_0

Answer: Option B

Solution (By JKSSB Mock Tests)

e°_x represents complete expectation of life at age x. At birth (age 0), it is e°_0.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

For a continuous variable, which graph is most suitable?

A. Ogive only

B. Bar chart

C. Histogram

D. Pie chart

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Correct Answer: Option C

Explanation:
Histogram represents continuous grouped data.

This question belongs to: Accountancy and Statistics Statistics

Question #2

For two positive numbers, the arithmetic mean is 25 and geometric mean is 20. The harmonic mean is:

A. 16

B. 15

C. 18

D. 22.5

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Correct Answer: Option A

Explanation:
For two numbers, HM = GM² / AM = (20)² / 25 = 400/25 = 16.

This question belongs to: Accountancy and Statistics Statistics

Question #3

An experiment consists of rolling a fair die. Event A = {2, 4, 6} and Event B = {3, 6}. What is P(A ∪ B)?

A. 1/3

B. 5/6

C. 2/3

D. 1/2

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Correct Answer: Option C

Explanation:
A ∪ B = {2, 3, 4, 6}. Four favorable outcomes. P(A ∪ B) = 4/6 = 2/3.

This question belongs to: Accountancy and Statistics Statistics

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