Factorial Array

Edit factorial array

Rename Levels of DOE Factors

Interactions

Adding repetitions

Block Levels

Sort data in subgroups

Anova DOE

Confirmation run

Response graphs

Response surface methodology

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A interaction is when the result is not the sum of two factors. With a interaction it can occur that the result of the to factors is lower or higher as the sum of the result.

For the interaction Dialog go to DOE=>Interactions

This Dialog is for selecting interaction that needs to be calculated in a Design of Experiment.

Data file

The Matrix indicates that Column C (pink means error) can not be used because that it is be used by the interaction. A bigger orthogonal matrix is needed. The indication of errors in the array is only been displayed when the check-box

With a bigger matrix it is possible to calculate the interaction.

The not used Columns can be removed. This is the result with measure data.

Adding a extra interaction between D and G the interaction dialogue will indicate that there is an error because both interactions interact with each other.

- http://www.itl.nist.gov/div898/handbook/pri/section6/pri623.htm
- http://en.wikipedia.org/wiki/Interaction_%28statistics%29