Custom DOE, 4 continuous factors, want to add replicate runs
I am creating a DOE with 4 continuous factors, including 2nd order interactions and quadratics. I would like to add replicate runs. I tried typing 5 into the replicate runs box before creating the design, but the design that was created did not have any replicates. The number of runs was 20 and all were unique. I understand replicates to be running the same set of conditions more than once. Am I ...