Bias

systematic measurement error

bias = x̄ − reference value

The difference between the average of repeated measurements and the true (reference) value of a part. A significant bias can usually be corrected by calibration or an offset.

Calculate it

Type 1 Gauge Study (Cg, Cgk): Cg, Cgk and bias test from repeated measurements of one master part.

Related terms

• Linearity: change of bias over the measuring range
• Cg and Cgk: gauge capability (type 1 study)