Key Points Span is a measurement used for non-normal distributions to detect variations. You typically truncate your data to ...

The standard deviation measures how far the average value lies from the mean, whereas the coefficient of variation measures the ratio of the standard deviation to the mean.

Variation is a disparity between an actual measure of a product characteristic and its target value. Excessive variation is outside the upper and lower acceptable limits established for a product ...

In statistical analysis, the coefficient of variation (COV) measures relative event dispersion. The COV is equal to the ratio between the standard deviation and the mean.

An analysis commissioned by the National Quality Forum identified 1,367 quality measures used by 48 state and regional programs — but only 509 of them were distinct. The more than 800 remaining ...

The absence of an independent relationship between the HQA surgical score and readmission rates may be a result of the low variation in performance on this measure (median score, 98.5% in the ...