What are variance components?

Variance components assess the amount of variation contributed by each source of measurement error, plus the contribution of part-to-part variability. The sum of the individual variance components equals the total variation.

What is study variation?

In gage R&R, study variation (Study Var) is the amount of variation caused by the measurement system and by the differences between parts. It is calculated as 6 * the standard deviations of each source of variation.

Minitab also calculates the percent study variation (%Study Var), so that you can compare the contribution of each component to the total variation.

By using this site you agree to the use of cookies for analytics and personalized content.  Read our policy