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Fractional factorial designs and fold-over

This video provides an introduction to fractional factorial two-level designs. Fold-over techniques are also discussed. This video was recorded by Dr. Erik Vanhatalo, Quality technology and logistics, Luleå University of Technology (LTU), Sweden. The primary purpose of this video is to be learning material for undergraduate and graduate students following a course in design and analysis of experiments at LTU. The course book used in these courses are primarily: Montgomery, D.C. (2013). Design and Analysis of Experiments. Wiley. Chapters: 0:00 Introduction 0:45 Sequential experimentation 1:39 Screening - appliction of fractional factorials 3:00 Illustration of the half fraction of a 2^k design 5:01 Definition of "design resolution" 5:50 Resolution III, IV and V designs 7:41 Design projection 9:53 Illustration of the one-quarter fraction of a 2^k design 11:54 Picking the highest resolution? 13:01 Solving aliasing problems through fold-over 15:26 Illustration of the full fold-over technique 18:17 The partial fold-over (semifold) 19:32 The (factorial) optimal fold-over 21:40 Main messages in this video