The harmonic mean is most appropriate for: MCQ with Answer and Explanation

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The harmonic mean is most appropriate for:

A. Average speed when distance is fixed

B. Average price

C. Average growth rate

D. Average height

Answer: Option A

Solution (By JKSSB Mock Tests)

HM is used for rates when the numerator is constant.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Which country has the largest population according to current estimates (2023)?

A. India

B. USA

C. China

D. Indonesia

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Correct Answer: Option A

Explanation:
As of 2023, India surpassed China to become the world's most populous country.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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The data collected from a sample is:

A. Complete enumeration

B. Sample survey data

C. Vital registration

D. Census

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Correct Answer: Option B

Explanation:
Sample survey collects data from a subset of the population.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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If (A)=60, (B)=40, N=100, and attributes are independent, then (AB) should be:

A. 30

B. 20

C. 24

D. 100

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Correct Answer: Option C

Explanation:
Expected (AB) = (A)×(B)/N = 60×40/100 = 24.

This question belongs to: Accountancy and Statistics Statistics

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