What is a good %CV value?
In statistics, data analysis, and quality control engineering, a Coefficient of Variation (%CV) value below 10% is widely considered excellent, indicating low relative variability and high precision within a dataset or measurement process. The coefficient of variation measures the dispersion of data points around the mean relative to the size of the mean itself. While a CV under 5% reflects exceptional laboratory or analytical consistency, values between 10% and 20% are frequently acceptable in clinical or field studies depending on the industry. However, a CV exceeding 20% or 30% typically signifies high data scatter and unreliability, necessitating process optimization.
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