A central composite design (CCD), contains an embedded factorial or
fractional factorial design with a center points that is augmented with a group of “star points” that allow estimation of curvature.
Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA-0003525.