2. Make the calculations

2.1 Experience matrix

As a reminder, the experimental design presented is a full factorial design with n factors and p levels 2 ² , i.e. two factors at two levels.

The matrix will therefore be designed on the basis of the following formulas:

• the number of experiments = p ⁿ i.e. 2 ² : 4 experiments ;

• the number of interactions = 2 ⁿ - n -1 i.e. 2 ² -2 -1 : 1 interaction.

By convention and for ease of reading, we'll...