The coefficient of variation is useful for comparing: MCQ with Answer and Explanation

The coefficient of variation is useful for comparing:
A. Variability of datasets with different units or means
B. Probabilities
C. Medians
D. Means of two groups
Answer: Option A
Solution (By JKSSB Mock Tests)
CV = (SD/Mean)×100 provides a relative measure of dispersion.

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Practice More Statistics Questions

Question #1
If class intervals are inclusive, before plotting a histogram we must:
A. Use cumulative frequencies
B. Plot directly
C. Convert them to exclusive by adjusting boundaries
D. Change class width

Correct Answer: Option C


Explanation:
Inclusive intervals have gaps; adjusting by half of the gap makes them continuous.

This question belongs to: Accountancy and Statistics Statistics
Question #2
A box contains 5 defective and 15 non-defective items. Two items are drawn. The probability that both are non-defective is:
A. 15/20 × 14/19 = 21/38
B. 1 - (5/20)²
C. (15/20)²
D. 21/38

Correct Answer: Option A


Explanation:
P(both non-defective) = (15/20)×(14/19) = 210/380 = 21/38.

This question belongs to: Accountancy and Statistics Statistics
Question #3
In most human populations, the age group with the highest age-specific fertility rate is typically:
A. 15-19
B. 40-44
C. 20-24
D. 30-34

Correct Answer: Option C


Explanation:
Fertility peaks in the 20-24 or 25-29 age range; commonly 20-24 is the highest in many populations.

This question belongs to: Accountancy and Statistics Statistics