Which of the following is true about Rule 1₂s?

Question

Quizplus · Accepted Answer

Rule 1₂s, often associated with Westgard rules for quality control in clinical laboratories, implies that a control will be considered out of acceptable limits if it falls outside ±1s (standard deviation) twice in a row on the same side of the mean, among other criteria. The statement that a control will violate the rule approximately once in every 20 acceptable runs is a statistical expectation based on the normal distribution of control values, where approximately 5% of values (or 1 in 20) would be expected to fall outside of ±1s under normal circumstances.

Which of the Following Is True About Rule 12s

Which of the Following Is True About Rule 1₂s