Abstract

Designs for estimating slopes of a second-order response surface are considered and moment requirements of the design to be D − rotatable are investigated. It is shown that, within the class of balanced symmetric designs, a second-order design is D − rotatable if and only if it is rotatable in the ordinary (Box-Hunter (1957)) sense.

Author: S. Huda, L. Benkherouf and F. Alqallaf

Received on: May, 2007

Accepted on: