Batch of material - how to treat it in DoE?
Hello everyone, This is my first post so I hope that my question is not found in other posts. If this is the case please guide me to the relevant post I saw in the "Optimal Design of Experiments - A Case Study Approach" book that in Chapter 4 the supplier of raw material, a categorical factor, is treated as a blocking factor for which interactions with the continuous main factors were accounted fo...