Quality Advisor

A free online reference for statistical process control, process capability analysis, measurement systems analysis, control chart interpretation, and other quality metrics.

Actual percent out-of-spec formulas

Actual % out-of-spec = % above upper spec + % below lower spec

To find actual % above spec:

% above upper specification formula

To find actual % below spec:

% below lower specification formula

Related topic:
The formula for theoretical percent out of spec

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