Coefficient of variation (CV):
ARandom
Bσ
Cσ²
DCV = (σ/μ) × 100% (relative variability, dimensionless)
Answer & Solution
Correct answer: D. CV = (σ/μ) × 100% (relative variability, dimensionless)
CV = (standard deviation / mean) × 100%. Dimensionless measure of relative variability. Useful for comparing variability across datasets with different scales or units.
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