Harmonic mean is undefined if: MCQ with Answer and Explanation

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Harmonic mean is undefined if:

A. Any observation is zero

B. Data are continuous

C. All observations are positive

D. Data are discrete

Answer: Option A

Solution (By JKSSB Mock Tests)

Reciprocals of zero are infinite, making HM undefined.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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The weight in the weighted mean reflects:

A. The range

B. The importance of the item

C. The frequency of the item

D. The value of the item

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Correct Answer: Option B

Explanation:
Weights indicate relative significance of each item.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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A major disadvantage of secondary data is:

A. Time consuming

B. Originality

C. High cost

D. May not suit the present research objective

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Correct Answer: Option D

Explanation:
Secondary data was collected for a different purpose; definitions and coverage may differ.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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The CPI for agricultural labourers (CPI-AL) is used to:

A. Calculate GDP

B. Adjust wages of agricultural labourers

C. Measure industrial growth

D. Regulate stock market

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Correct Answer: Option B

Explanation:
CPI-AL is primarily used to revise minimum wages for agricultural workers.

This question belongs to: Accountancy and Statistics Statistics

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