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Creating an Outer Array Design

To create the outer array, you customize the current design you created for the inner array. Follow these steps:

1. Click Customize.
   
   

   
   
   

2. Click Define Outer Array to open the Outer Array Design Specification window.
3. Change the number of factors to 3.
4. Select the 2-level design with 3 factors and 8 runs. You can show only two-level designs by selecting Two Level and clearing the other check boxes.
   
   

   
   
   

5. Click Factors to define the TIME, TEMPERAT, and HUMIDITY noise factor names and levels for the outer array.
6. Click OK to accept this design for the outer array. ADX indicates the outer array design in the Customize window.
7. Click OK.

The complete product design, shown in the Mixed Level Design window, will have 72 runs.