The treatment-design portion of fractionated two-level split-plot designs is associated with a subset of the 2 n-k fractional factorial designs. The concept of aberration is then extended to these ...

In some experiments, treatments can be applied only to groups of experimental observations rather than separately to each observation. When there are two nested groupings of the observations on the ...

In this section we are interested in recognizing and understanding three other types of experimental designs. These are designs with subsampling, split plot designs, and repeated measures designs.