On bounds for the efficiency of block designs for comparing test treatments with a control.

*(English)*Zbl 0642.62044We study the class of augmented balanced incomplete block desings, which are used for comparing a control treatment with a set of test treatments. Under the A-criterion we establish a condition that enables us to determine the most efficient augmented design and we suggest some methods to compute a lower bound for the efficiency of these designs. For \(3\leq k\leq 10\), \(v\geq k\), we list the parameters of the most efficient designs with a lower bound for their efficiency or, if known, mention their optimality.

##### Keywords:

control-test treatment comparisons; augmented balanced incomplete block desings; most efficient augmented design; lower bound for the efficiency
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\textit{J. Stufken}, J. Stat. Plann. Inference 19, No. 3, 361--372 (1988; Zbl 0642.62044)

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##### References:

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