The lack of consideration for statistical properties in Taguchi's threelevel linear graphs is rectified. We propose a new set of linear graphs for the threelevel orthogonal arrays according to the maximum resolution criterion. In the presence of t...
The lack of consideration for statistical properties in Taguchi's threelevel linear graphs is rectified. We propose a new set of linear graphs for the threelevel orthogonal arrays according to the maximum resolution criterion. In the presence of twofactor interactions however, the serious bias of all the estimated effects as well as the estimated variance shows that these designs should not be employed. The various alternative designs are discussed.