The Data tab of the gage R&R folio contains a control panel and a sheet with the following four columns for entering data:
Part is the identifier for the part that was measured.
Operator is the identifier for the person who performed the measurement.
Reading is the measurement obtained from the gage under investigation.
Trial is used to help you keep track of multiple trials that are used in a particular study. For example, in a crossed gage R&R study, the first measurement of a part by an operator would be trial #1, the second measurement by the same operator trial #2, and so on. These values are not used in the calculations.
As an example, suppose a scale used to weigh two parts (in pounds). Part 1 is measured four times: twice by Operator A and twice by Operator B. Part 2 is also measured twice by each operator. The resulting data is shown next. For example, the first row shows that Part 1 was measured by Operator A, who obtained a measurement of 9.856 pounds.