# Charts (Gauge R&R)

# X Bar R Chart

The X Bar R Chart plots the average and range of data collected for each part number by each operator.

Error Chart

The Error Chart is a tool for Error Analysis. The chart is drawn on the basis of reference values defined during mapping of instruments to parts and parameters for Gauge R & R study.

An Error Chart takes measurement data and displays its individual deviations from the accepted reference. It reveals the amount of variation that any parameter of a part has from its reference value. The horizontal axis of the Error Chart represents the error value for different operators for different trials of a part. The vertical axis of the Error Chart represents the range of errors for measurements of the part – parameter.