Factorial Experiment Examples. 2 months and the sex of the psychotherapist female vs. 552 Chapter 13 Factorial and Fractional Factorial Experiments for Process Design and Improvement 132 Examples of Designed Experiments in Process and Product Improvement In this section we present several examples that illustrate the application of designed experiments in improving process and product quality.
Consider a factorial design to study the effects of the amounts of three factors on the taste of chocolate chip cookies. Taste will be measured on a scale of 1 poor to 10 excellent. The levels within each factor can be discrete such as Drug A and Drug B or they may be quantitative such as 0 10 20.
As an example of a factorial design involving two factors an engineer is designing a battery for use in a device that will be subjected to some extreme variations in tempera- ture.
For example Gender might be a factor with two levels male and female and Diet might be a factor with three levels low medium and high protein. For example an experiment could include the type of psychotherapy cognitive vs. Example of Factorial Design The table below represents a 2 x 2 factorial design in which one independent variable is the type of psychotherapy used to treat a sample of depressed people behavioural vs cognitive and the other is the duration of that therapy short vs long. Behavioral the length of the psychotherapy 2 weeks vs.
