Measurement System Drilldown

Even if Gage R&R studies cannot be applied in their purest form, you must be confident that your data represents the process adequately. This can be done by using a Measurement System Drilldown: It prevents you from using data if you do not know where it came...

Data Collection Plan

The data collection plan makes sure that you collect the data in a way that you can later use these data to analyze cause-effect relationships (measuring Ys and Xs at the same time). By deciding which “data we want to have”, the data collection plan...

Control Limit

The control limits are calculated from the data. In a Control Chart, they are displayed as horizontal lines. For normally distributed data, they are an estimation of 3 standard deviations using time order information: Upper Control Limit (UCL) = Mean + 3 Standard...