Equiradial designs under changing axial distances, design sizes and varying center runs with their relationships to the central composite designs

Mary Iwundu; Henry Onu

doi:10.14419/ijasp.v5i2.7701

Article Details

Equiradial designs under changing axial distances, design sizes and varying center runs with their relationships to the central composite designs

Authors:

Mary Iwundu | Henry Onu

Publisher:

Science Publishing Corporation

Journal:

International Journal of Advanced Statistics and Probability Vol.5 Issue 2, pp.77-82

Document Type:

Article

Publication Date:

7/2017

Document Language:

English

Document ID (Org No.):

2001387032

pISSN:

2307-9045

DOI:

10.14419/ijasp.v5i2.7701

Keywords:

Equiradial Design

Abstract:

 In assessing the preferences of equiradial designs based on design size, axial distance and number of center points in relation to the central composite designs, D-absolute deviation (D-AD) and G-absolute deviation (G-AD) are proposed as new design measures of closeness of experimental designs. Each absolute deviation is positive or zero. The G-absolute deviation is zero or approximately zero at Â equals 1 center point. For Â greater than 1, G-absolute deviation decreases for increasing values of . On the other hand, the D-absolute deviation decreases as the design size increases. Designs having G-AD values of zero or approximately zero are identical or near identical in G-optimality properties. Also, designs having D-AD values of zero or approximately zero are identical or near identical in D-optimality properties. It is conjecturally hoped that at some increased design size, the equiradial designs and the central composite designs, having same axial or radial distance will coincide (be identical) in their properties, with D-AD value of zero or approximately zero.

Article Details

Equiradial designs under changing axial distances, design sizes and varying center runs with their relationships to the central composite designs

Authors: Mary Iwundu | Henry Onu

Publisher: Science Publishing Corporation

Journal: International Journal of Advanced Statistics and Probability Vol.5 Issue 2, pp.77-82

Document Type: Article

Publication Date: 7/2017

Document Language: English

Document ID (Org No.): 2001387032

pISSN: 2307-9045

DOI: 10.14419/ijasp.v5i2.7701

Equiradial Design

Issues

Authors:

Mary Iwundu | Henry Onu

Publisher:

Science Publishing Corporation

Journal:

International Journal of Advanced Statistics and Probability Vol.5 Issue 2, pp.77-82

Document Type:

Article

Publication Date:

7/2017

Document Language:

English

Document ID (Org No.):

2001387032

pISSN:

2307-9045

DOI:

10.14419/ijasp.v5i2.7701