Gage R&R Study (Nested) for Perform Nested Study

Use Gage R&R Study (Nested) to assess the variation in your measurement system when every operator cannot measure all parts.

If you cannot split a sample into four or more subsamples, use a nested study to estimate repeatability and reproducibility. This study is called nested because one or more factors is nested under another factor and, thus, not crossed with the other factors. If you can split a single sample into 4 or more subsamples for multiple operators, use a crossed study, go to Gage R&R Study (Crossed) for Perform Crossed Study.

This example applies to the Measurement System Analysis Module. For more information, go to www.minitab.com/measurement-system-analysis-module.

Example

In this worksheet, Part contains the part number identifiers, Operator contains the operator identifiers, Measurement contains the measurements of each part.

C1	C2-T	C3
`Part`	`Operator`	`Measurement`
5	A	119.29
4	A	120.41
7	A	121.64
7	A	121.56
6	A	120.68

How-to

Choose Solutions Modules > Capabilities > Measurement System Analysis, then select Launch.
Under Destructive Gage R&R Study, select Select a Destructive Gage R&R Study.
Select Perform nested study, then click OK.
Select Gage R&R Study (Nested), then click OK.
In Part or batch numbers, enter the column that contains the part or batch identifiers.
In Operators, enter the column that contains the operator identifiers.
In Measurement data, enter the column that contains the observed measurements.
Click OK.

Tip

For more information about this analysis, click Help in the main dialog box. Additional information, such as Gage R&R studies with destructive testing, is also available in the Supporting Topics section.