A Study on Second Order Rotatable Designs under Tri-diagonal Correlated Structure of Errors Using a Pair of Balanced Incomplete Block Designs
K. Raghavendra Swamy *
Department of Statistics, Acharya Nagarjuna University, Guntur, 522510, India.
B. Re. Victorbabu
Department of Statistics, Acharya Nagarjuna University, Guntur, 522510, India.
*Author to whom correspondence should be addressed.
Abstract
In this paper, a study on second order rotatable designs under tri-diagonal correlated structure of errors using a pair of balanced incomplete block designs is suggested. Further, the variance function of the estimated response for different values of tri-diagonal correlated coefficient and distance from centre for ( - factors) are studied.
Keywords: Second order rotatable designs, tri-diagonal correlated errors, balanced incomplete block designs.