The weighted harmonic mean is used in which of the following situations? MCQ with Answer and Explanation

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The weighted harmonic mean is used in which of the following situations?

A. Averaging percentages

B. Averaging rates when weights are in the denominator units

C. Measuring dispersion

D. Finding the typical value of a symmetric distribution

Answer: Option B

Solution (By JKSSB Mock Tests)

Weighted harmonic mean is useful when the weights are in the same units as the numerator of a rate.

This question belongs to: Accountancy and Statistics Statistics

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A questionnaire should generally begin with:

A. Sensitive and personal questions

B. Ambiguous questions

C. Simple and general questions

D. Leading questions

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Correct Answer: Option C

Explanation:
Starting with simple, non‑threatening questions builds rapport and encourages the respondent to continue.

This question belongs to: Accountancy and Statistics Statistics

Question #2

If Yule's coefficient of association (Q) is +1, the attributes are:

A. Independent

B. Inconsistent

C. Completely dissociated

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Correct Answer: Option D

Explanation:
Q = +1 indicates perfect or complete positive association, where the presence of one attribute implies the other.

This question belongs to: Accountancy and Statistics Statistics

Question #3

A histogram is used for representing:

A. Continuous frequency distribution

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Correct Answer: Option A

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

This question belongs to: Accountancy and Statistics Statistics

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