We consider the problem of comparing test treatments with a control in a proper block design. We give conditions on the parameters of both R-type and S-type designs that guarantee their $A$-optimality, and demonstrate how these conditions can be used to obtain families of $A$-optimal designs. We give an example for the construction of the desired S-type designs. A table with optimal R-type designs $(3 \leq k \leq 10, k \leq v \leq 30)$ is also given.
@article{1176350614,
author = {Stufken, John},
title = {$A$-Optimal Block Designs for Comparing Test Treatments with a Control},
journal = {Ann. Statist.},
volume = {15},
number = {1},
year = {1987},
pages = { 1629-1638},
language = {en},
url = {http://dml.mathdoc.fr/item/1176350614}
}
Stufken, John. $A$-Optimal Block Designs for Comparing Test Treatments with a Control. Ann. Statist., Tome 15 (1987) no. 1, pp. 1629-1638. http://gdmltest.u-ga.fr/item/1176350614/