Design of Experiments

Design of Experiments Are The Work Horse of Quality Improvement

The purpose of a design of experiments is to provide the most efficient and economical methods of reaching valid and relevant conclusions from the experiment being conducted.  As stated in previous blog posts, there are many experimental designs to chose from and in my opinion this is part of the problem.  The novice experimenter when faced with so many choices can become confused and...

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Screening Design of Experiments Sort Out Important Factors

As I stated in last week’s post, most beginning experimenters try to combine everything into one experiment.  The thinking is if they can include everything, they can do one experiment and be done.  But it never works that way.  Instead it is an iterative approach, where you learn as you go, getting a better understanding with each experiment conducted. So where and how do you get...

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A Beginners Guide To Design of Experiments

Design of experiments (DOE) is one of the most valuable tools in the Six Sigma toolkit.  It is the only tool that allows a proactive approach for process improvement.  Unlike analysis of variance (ANOVA) or regression where past data is analyzed, DOE allows for the collection of realtime data and its analysis.  It is ideally suited to address problems where more than one variable may affect...

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