2(2)2s = reject when 2 consecutive control measurements exceed the same mean plus 2s or...

ASCP ASCP-MLT Question Answer

2(2)2s = reject when 2 consecutive control measurements exceed the same mean plus 2s or the same mean minus 2s control limit.

Violation of this Westgard rule is usually caused by a systematic error.

Laboratory Operations

Which of the following describes the Westgard multirule 2(2)S?

Two control data points are within + 2s

One control data point falls outside +2s and a second point falls outside -2s

Two consecutive data points fall outside +2s or fall outside -2s

Two consecutive data points fall outside +2s

Synonymous with R4s

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