Mixed-Level Designs

Points to Remember

A mixed-level design that uses the Taguchi (1978) approach is characterized by two sets of factors: control factors and noise factors.
The experimental design for the control factors is called an inner array and is often chosen as a mixed-level design.
The Taguchi (1978) approach with mixed-level designs does not typically consider interactions.
You can use the Customize Design window to define the outer array for the noise factors.
The Response tab of the Define Variables window is used to create a signal-to-noise response ratio.
You can use the ADX optimization tools on the fitted master model when analyzing mixed-level designs by using the Taguchi (1978) approach if the inner array design is saturated.