Abstract
In this paper, we have constructed designs with unequal block sizes for comparing test treatments with a control by using the method of cyclic shifts. These designs are also known as Balanced Treatment Incomplete Block Designs (BTIBDs) . An important feature of this method of construction is that the properties of a design can easily be obtained from off-diagonal elements of the concurrence matrix without constructing the actual blocks of the design. One representative case for such BTIBDs with unequal block sizes k1 = 5 and k2 = 4 for v = 7 is presented.
Author: Ijaz Iqbal and M. H. Tahir
Received on: February, 2009
Accepted on: April, 2010