A NEW UPPER BOUND FOR THE EFFICIENCY FACTOR OF A BLOCK DESIGN
- 28 June 1990
- journal article
- Published by Wiley in Australian Journal of Statistics
- Vol. 32 (2) , 231-237
- https://doi.org/10.1111/j.1467-842x.1990.tb01016.x
Abstract
Summary: An upper bound for the efficiency factor of a block design, which in many cases is tighter than those reported by other authors, is derived. The bound is based on a lower bound for E(1/X) in terms of E(X) and var(X) for a random variableXon the unit interval. For the special case of resolvable designs, an improved bound is given which also competes with known bounds for resolvable designs in some cases.Keywords
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