In this lesson, we discussed split-plot designs with the special feature of having two types of experimental units: whole plots into which the whole plot treatments are assigned and the subplots into which the subplot treatments are assigned.
The whole plot assignment can be either according to a CRD or an RCBD, and depending on this design type, the overall design is either called a split-plot in CRD or RCBD. Note that in either case, the denominator of the F-statistic for testing the whole plot factor is not the MSE, but equals the MS of \(\text{replicate}(\text{A})\) and MS of \(\text{block} \times \text{A}\), respectively.