Demography is the study of: MCQ with Answer and Explanation

Demography is the study of:

A. Human population

B. Weather patterns

C. Economic systems

D. Animal behavior

Answer: Option A

Demography deals with human populations — size, composition, and distribution.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

An ogive is used to determine:

A. Mean

B. Mode

C. Standard deviation

D. Median

Correct Answer: Option D

Explanation:
The median can be read from the ogive at the N/2 cumulative frequency.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

The Paasche index is likely to understate price rise because:

A. It uses current year quantities, reflecting substitution

B. It uses geometric mean

C. It uses base year quantities

D. It is unweighted

Correct Answer: Option A

Explanation:
Substitution away from goods whose prices rose relatively reduces their weight, leading to underestimation.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

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

A. 15

B. 16

C. 18

D. 22.5

Correct Answer: Option B

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

This question belongs to: Accountancy and Statistics Statistics