On the optimality of a class of designs
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Sunanda Bagchi
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Article
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2006
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Elsevier Science
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English
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In the present paper we consider a class of unequally replicated designs having concurrence range 2 and spectrum of the form ยต 1 (ยต 2 ) v-3 ยต 3 . Now, Jacroux's [Some sufficient conditions for the type I optimality of block designs, J. Statist. Plann. Inference 11 (1985) 385-396] Proposition 2.4 say