Sankhya: The Indian Journal of Statistics

1995, Volume 57, Series B, Pt. 1, pp. 166--168

A NOTE ON NON-ORTHOGONAL MAIN-EFFECT PLANS

By

M. K. SHARMA, N. D. U. A. & Technology

SUMMARY.  A method of constructing non-orthogonal main-effect plans of the type $2_\nu/(v+1)$ through partially balanced incomplete block designs by adding rows of -1's or +1's or both in the incidence matrices of the designs, is described. The procedure yields some saturated new non-orthogonal plans having higher efficiency (say 90% or above).

AMS (1980) subject classification.  62K15.

Key words and phrases. Partially balanced incomplete block design, regular group divisible design, triangular design, latin square design, non-orthogonal main-effect plans.

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