Design and Analysis of Experiments by Douglas Montgomery: A Supplement for Using JMP

14Nested and Split-Plot Designs

Example 14.1 The Two-Stage Nested Design

Example 14.2 A Nested-Factorial Design

Section 14.4 The Experiment on the Tensile Strength of Paper

Example 14.3 A 2^5-1 Split-Plot Experiment

In the full factorial designs that have been covered in prior chapters, distinct factors A and B in the experiment are crossed. That is, each level of A appears with each level of B in at least one experimental run. However, in some situations it is not possible for all of the combinations of factor levels to appear in a design. For example, if a manufacturer designs an experiment to test the variability in purity of a raw material, two potential factors of interest are the suppliers and the batches from each supplier. In this case, ...