Experiment Design Help please

Hi All
I have used a Central Composite Design (CCD) for my experiments, where I have three Factors (A, B, c) and each Factor has five values. I have done the experiments (20 Runs) and I have one output factor (MS). Can anyone help me with the Analysis please.

Please find the input and the output factors in the attachment.

Many thanks in advance,

Last edited:


New Member
Hi Luc,

Many thanks for your help. Would you be able to show me how you did this solution because When I do the Analyse response surface design, the R-sq(pred) is very low as shown in the attach file.

Many Thanks in advance,