Certain balanced incomplete block designs are such that a double grouping of blocks into sets made up of complete replications is possible, with a corresponding reduction in the variance of interblock ...

For a given block size, replication, and number of treatments, it is well known that a balanced incomplete block design, if one exists, is of maximum efficiency. We take the case of an even number of ...

A graph G with vertex set V is said to be n-existentially closed (or n-e.c. for short) if, for every proper subset S of V with |S|=n and every subset T of S, there exists a vertex x in V-S such that x ...

Analysis of variance is most often used for data from designed experiments. You can use the PLAN procedure to construct designs for many experiments. For example, PROC PLAN constructs designs for ...