The weighted harmonic mean is used to average: MCQ with Answer and Explanation

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The weighted harmonic mean is used to average:

A. Performance ratios when weights are proportional to denominator

B. Growth rates

C. Prices when expenditures are equal

D. Speeds when distances vary

Answer: Option A

Solution (By JKSSB Mock Tests)

Weighted harmonic mean is appropriate when the weights correspond to the denominator of the ratio.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

For a dataset of 10 numbers, Σx = 500 and Σx² = 26000. The coefficient of variation (%) is:

A. 20

B. 15

C. 25

D. 10

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Correct Answer: Option A

Explanation:
Mean=50. Variance = (26000/10) - 50² = 2600-2500=100. SD=10. CV = (10/50)×100 = 20%.

This question belongs to: Accountancy and Statistics Statistics

Question #2

A histogram is used for representing:

A. Cumulative frequencies

B. Qualitative data

C. Continuous frequency distribution

D. Discrete data

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Correct Answer: Option C

Explanation:
Histogram is for continuous data, with adjacent bars touching.

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. 2/3

B. 1/3

C. 1/2

D. 5/6

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Correct Answer: Option A

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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