That's a good question

Thank you immensely @ Ibham for the link however the provision for Pareto chart is made for Regular Two-Level Factorial Design. My problem is how can I make Pareto plot using the central composite design (CCD) technique. Also the design matrix for CCD and Two-level factorial design are not same as the later does not consider intermediate lower and intermediate higher levels. Please I need assistance

Chukwunonso Okoye , obtaining a pareto chat for CCD using Statease design expert cannot be achieved. I will suggest u use either Statistica or Statgraphics.

@Babatunde Olawoye, I'm grateful for your schorlaly suggestion

Please check my article

Hello Sir

Pareto chart not founded in design expert version 7, so you can use version 11 from response analysis, press effects tab, and using Pareto chart.

I wish I helped you with your question.

hello,

pareto chart in design expert solved with screening method such such blackettburman.

after use the method above and select effective parameters by paretochart then use response surface methodology based on central composite design to optimize effective parameters obtained from paretochart

please find attachment i hop to helped you

@Chukwunonso Okoye

For starters, you can view tutorials from Stat-Ease for different designs and their selection criterions.

Here is a recent article I had published that gives a step-by-step process of using for various designs in Design Expert with experimental case studies.

https://doi.org/10.1016/j.fuel.2022.124607

Hope this helps!