Which of the Following Explains How a Violation of Westgard $\bar{x}+2 s$

question 18

Multiple Choice

Which of the following explains how a violation of Westgard Rule R₄s is identified?

• A) The difference between two consecutive data points is at least 4 SD, and one data point lies
• above \( \bar{x}+2 s \) and the other lies below \( \bar{x}-2 s \).
• B) The result from 2 single control run lies outside the range \( \bar{x} \pm 3 s \)
• C) The result from one control lies above \( \bar{x}+2 s \), and the result from a different control lies
• below \( \bar{x}-3 s \).
• D) Both A and C are correct.

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Definitions:

Barrel

A cylindrical container traditionally made of wooden staves bound by iron hoops, used for storing and transporting liquids like wine, oil, and beer.

Elasticity

Ability to return to shape after being stretched.

Spirits of Ammonia

A solution of ammonia in water used as a stimulant, antacid, and astringent, historically in smelling salts to revive someone who has fainted.

Inhalant

A substance inhaled to give a pharmacological effect, often drugs, anesthetics, or volatile substances used recreationally.