The coefficient of variation is useful for comparing series measured in:
ADifferent units
BThe same unit
CUnitless form
DWhole numbers
Answer & Solution
Correct answer: A. Different units
1. Two series may use different units.
2. Their spreads cannot then be compared directly.
3. A unit free measure is needed.
_Source: NCERT Class 11 Mathematics, Chapter 15, Statistics._
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