With the newly found window into the contour map, it is easy to locate the best direction for finding the optimum.
As mentioned previously, interaction is the key to understanding the system. When you apply DOE to your own systems, you will discover how common and influential these interactions are in practice.
Finally, let's work out the number of experiments required for this design. There are the four corner points defining the square plus three additional centre points for diagnostic purposes. So just seven experiments in all!
How it Works
