Restricted second-order designs on one on two concentric balls

F. Noyanim Nwobi; A. Chukwuemeka Okorafor; Ike Basil Onukogu

doi:10.6092/issn.1973-2201/6815

Restricted second-order designs on one on two concentric balls

Authors

F. Noyanim Nwobi Abia State University, Uturu
Department of Statistics
A. Chukwuemeka Okorafor Abia State University, Uturu
Department of Mathematics
Ike Basil Onukogu University of Nigeria, Nsukka
Department of Statistics

DOI:

https://doi.org/10.6092/issn.1973-2201/6815

Abstract

Designs for quadratic regression on one and two concentric balls are considered in this paper. The balls are defined by ....................

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The 2^k factorial structure with additional 2 axial points provides the basic framework for the experiment. Restrictions such as orthogonality, rotatability, etc. which induce desirable properties are imposed on the design and their effects on the variance of the quadratic model compared.

Published

2007-03-31

How to Cite

Nwobi, F. N., Okorafor, A. C., & Onukogu, I. B. (2001). Restricted second-order designs on one on two concentric balls. Statistica, 61(1), 103–112. https://doi.org/10.6092/issn.1973-2201/6815