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Fractional factorial designs and fold-over
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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
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
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