ABSTRACT

Robust second-order slope-rotatability and modified slope-rotatability along axial directions have been introduced in Chapter 6. These designs have not been still developed to a large extent in literature. Optimal robust second-order slope-rotatable designs (over all directions or A-optimal, with equal maximum directional variance and with D-optimal slope) have been developed in Chapter 7. The present chapter describes some measures of robust secondorder slope-rotatability along axial directions, over all directions and with equal maximum directional variance for correlated errors. These measures have been illustrated with different examples. In the process, weakly robust second-order slope-rotatability has been introduced.