Basic principles
Modelling by Experimental Designs
Article REF: R275 V2
Basic principles
Modelling by Experimental Designs

Author : Jacques GOUPY

Publication date: September 10, 2016 | Lire en français

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1. Basic principles

Understanding the experimental design method is based on two essential concepts: experimental space and mathematical modeling of the quantities under study.

1.1 Notion of experimental space

Suppose an experimenter starts a study. He is interested in a quantity that he measures at each trial. This quantity is called the response, and is the quantity of interest. The value of this variable depends on several variables. Instead of the term "variable", we'll use the word "factor". We say that "the response depends on several factors".

The first factor can be represented by a graduated, oriented axis (figure

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