The difference of the variance functions between two estimated responses for a fourth order rotatable design in two dimensions

dc.contributor.author	Njui, F.
dc.contributor.author	Pokhariyal, G.P.
dc.contributor.author	Karanjah, A.
dc.date.accessioned	2016-04-07T13:12:42Z
dc.date.available	2016-04-07T13:12:42Z
dc.date.issued	2000
dc.identifier.uri	http://hdl.handle.net/123456789/2550
dc.description	Full text	en_US
dc.description.abstract	In this paper the difference of the variance functions between two estimated responses for a fourth order design at any two points in the factor space is developed. In particular, the variance function is considered in two dimensions when the design used is rotatable. The variance function in this situation is a function of the distances of the points from the origin of the design and the angle subtending the points at the origin. The variance function of this approach is discussed in detail when the two points are equidistant from the origin of the design. The criterion for the choice of an optimal design is given	en_US
dc.language.iso	en	en_US
dc.subject	variance functions	en_US
dc.title	The difference of the variance functions between two estimated responses for a fourth order rotatable design in two dimensions	en_US
dc.type	Article	en_US