ABSTRACT
In the previous chapter, we introduced the CCD-the first choice for practitioners of RSM because of its flexibility. As illustrated by a case study, an experimenter can hedge on RSM by adding CPs to a simpler, more economical two-level factorial. If curvature is not significant, it’s time to move on: why bother doing RSM if the surface is planar? On the other hand, if you detect a significant increase or decrease in response at the CP and it merits further attention, you can complete the CCD by adding the second block of axial points, including more CPs to provide a link with block one.
