Stat > Quality Tools > Gage Study > Gage Linearity and Bias Study
Gage linearity tells you how accurate your measurements are through the expected range of the measurements. It answers the question, "Does my gage have the same accuracy for all sizes of objects being measured?"
Gage bias examines the difference between the observed average measurement and a reference or master value. It answers the question, "How biased is my gage when compared to a master value?"
Part numbers: Enter the column containing the part name or number.
Reference values: Enter the column containing the reference values.
Measurement data: Enter the column containing the observed measurements.
Process Variation (optional): Enter the process standard deviation. You can get the process standard deviation from the Total Variation row of the 6 * SD column of the output from the Gage R&R Study - ANOVA Method or you can enter a known value (6 * the historical standard deviation).