Display or change the alias structure for a Taguchi design

Display the alias structure

If you have a 2-level L4, L8, L16, or L32 design, you can use Analyze Factorial Design to display the alias structure.

For example, you create an L8 Taguchi design with three 2-level factors. You enter the factors in C1, C2, and C3, and the responses in C4 and C5. To display the alias structure:
  1. Choose Stat > DOE > Factorial > Define Custom Factorial Design.
  2. In Factors, enter C1 C2 C3.
  3. Click Low/High. Click OK in each dialog box.
  4. Choose Stat > DOE > Factorial > Analyze Factorial Design.
  5. In Responses, enter C4. Click OK.

Minitab displays the alias structure at the bottom of the Session window. You can disregard the other output.

Note

To analyze the design, you must re-define it as a Taguchi design.

  1. Choose Stat > DOE > Taguchi > Define Custom Taguchi Design.
  2. In Factors, enter C1-C3. Enter a signal factor if applicable. Click OK.

Change the alias structure

To change the alias structure when creating a Taguchi design:
  1. Choose Stat > DOE > Taguchi > Create Taguchi Design > Factors.
  2. Enter the columns of the array to which you want to assign the factors.
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