1. Department of Mathematics , Hiroshima University , Hiroshima, 734, Japan;2. Stat-Math Division , Indian Statistical Institute , Calcutta, 700035, India;3. Chiba University, Japan and Indian Statistical Institute ,
Abstract:
A wide class of block designs admitting a simple analysis has been considered. The statistical properties of such designs have been indicated and the problems relating to their characterization and construction have been investigated.