Harmonic mean is most appropriate for averaging: MCQ with Answer and Explanation

Question Report Error
Harmonic mean is most appropriate for averaging:
A. Data with extreme outliers
B. Ordinal scale measurements
C. Qualitative data
D. Rates and ratios, such as speed or price-earnings ratios
Answer: Option D
Solution (By JKExamLibrary)
Harmonic mean is suitable for averaging rates or ratios because it gives equal weight to each data point's reciprocal, preventing distortion from high values in rate calculations.
This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1 Report Error
Assertion (A): Gross Reproduction Rate (GRR) is always less than or equal to Total Fertility Rate (TFR). Reason (R): GRR considers only female births. Choose the correct option:
A. A is true, R is false
B. A is false, R is true
C. Both A and R are true, and R is the correct explanation of A
D. Both A and R are true, but R is not the correct explanation of A
Discuss

Correct Answer: Option C

Explanation:
GRR = TFR × (female proportion), so GRR ≤ TFR. R explains why.
This question belongs to: Accountancy and Statistics Statistics
Question #2 Report Error
The condition (A) ≥ (AB) is necessary for:
A. Zero association
B. Independence
C. Negative association
D. Consistency of data
Discuss

Correct Answer: Option D

Explanation:
Consistency requires that marginal frequencies are not less than the joint frequencies.
This question belongs to: Accountancy and Statistics Statistics
Question #3 Report Error
Bayes' theorem is a formula to calculate:
A. Unconditional probability
B. Intersection of independent events
C. Reverse conditional probability (posterior)
D. Union of events
Discuss

Correct Answer: Option C

Explanation:
Bayes' theorem calculates the posterior probability of a cause given the observed effect, effectively reversing the conditional direction.
This question belongs to: Accountancy and Statistics Statistics
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