An electronics design engineer studies the effect of operating temperature and three types of face-plate glass on the light output of an oscilloscope tube.
You can use this data to demonstrate Fit General Linear Model, a clustered or stacked Bar Chart of A function of a variable, and other analyses that compare measurement data for groups that have more than one level.
|LightOutput||The light output of the oscilloscope tube|
|Temperature||The temperature at which the light output was measured: 100, 125, or 150|
|GlassType||The glass type used in the oscilloscope tube: 1, 2, or 3|
The example and data are from D.C. Montgomery (2001). Design and Analysis of Experiments. Fifth Edition. John Wiley & Sons, page 213.