Levy Jenning Chart <2K HD>

The "interesting feature" of the Levy-Jennings chart is its ability to . It transforms the abstract concept of standard deviation into a clear, color-coded map, allowing laboratories to trust their patient results by instantly spotting when an instrument goes "out of control."

Horizontal lines drawn at ±1, ±2, and ±3 SD from the mean. Statistically, 95.5% of results should fall within ±2 SD in a stable system, while 99.7% should fall within ±3 SD. levy jenning chart

The Levy Jennings chart can detect two types of errors: The "interesting feature" of the Levy-Jennings chart is

The Levey-Jennings chart has several advantages: The Levy Jennings chart can detect two types

The Levey-Jennings chart was first introduced in 1950 by Levey and Jennings, two American statisticians who worked in the field of laboratory medicine. They developed this chart as a way to monitor the quality of laboratory test results and detect any deviations from the expected values.

The Levy-Jennings chart is rarely used in isolation; it is almost always paired with . These are statistical rules used to detect different types of errors.

Four consecutive points exceed ±1 SD on the same side of the mean, suggesting a small, consistent bias.