M03 Gage R&R Studies

Module 3 Gage R&R Studies

Lesson M3-00

Text: Section 2

Duration: 2 minutes

Gage R&R Studies Module Introduction

Module 3 covers the planning, conduct, and analysis of data for Gage Repeatability and Reproducibility Studies. We start with planning guidelines that cover sample sizes, specimen selection, and suggestions for conducting the study.  Next, we introduce one method for estimating the measurement error components called the Average and Range Method which is simple enough be done in Excel.  We demonstrate how to set up and analyze a Gage R&R study in Minitab.  Then we introduce Analysis of Variance (ANOVA) and the use of this method for analyzing Gage R&R studies.  Several of the benefits of ANOVA are discussed including better precision of variance estimates, allowance for expanded studies, ability to estimate interactions, and ability to compute confidence intervals.  The last lesson illustrates the analysis of an expanded Gage R&R study where additional factors may be included into the study.