27.1 Calculating the Effects and Determining the Significant Ones
Stat > DOE > Factorial > Analyze Factorial Design
This menu option only appears enabled if the worksheet contains a design of experiments matrix. Thus, either the option Create Factorial Design or Define Custom Factorial Design must have been used previously.
Stat > DOE > Factorial > Analyze Factorial Design > Graphs
Example 27.1:
Consider again the first example of Chapter 26 where a design of experiments is carried out to improve the quality of the welding process performed in a stainless steel component, which is used in the production of exhaust pipes. The considered factors are gas flow, intensity and chain speed.
The Minitab worksheet looks as follows:
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