Sure this is a full factorial design. See attached for full details. Best, David Booth

Dear Heshani Rathnayake

You need to describe your study in more details if we are to give you any advice.

Best

John-KÅre

Heshani Rathnayake :

You can have complete randomized design, make sure you have replication as one of the factors. Also, you need to clearly understand your objective of research before decide your factors. Maybe add more details on your research background for others to help you more.

Dear David Eugene Booth,

Thank you very much for your kind response.

Regards,

Heshani Rathnayake

Dear John-Kåre Vederhus , Kaushik Luthra

Thank you very much for your kind response.

I am planing to do a product development study with 6 variables. Therein, 4 ingredients are required to be added in 2 levels (low and high) and 2 ingredients are required to be added in 3 levels (low, moderate and high). I have tried Taguchi mixed-level design in minitab 17 statistical software. That resulted L36 design. Hence, I needed to know is there any more experimental designing methods to conduct this study.

Regards,

Heshani Rathnayake

Sorry, Heshani Rathnayake , I'm still in a haze. What is you outcome? Will customers rate the different products or is it a process evaluation? Isn't it possible to split up the design, i.e., examine one ingredient at a time? The simultaneous analysis of all factors seems to be too complicated.

Best

JK

Dear John-Kåre Vederhus ,

Thank you very much for your kind response,

This study is a product development. Each treatment combination is planned to be compared with regarding the product properties to determine the optimum performance of the variables. According to that, the number of variables are planned to be reduced and then conduct further studies (such as sensory evaluation).

However, I will consider your suggestion as well.

Regards,

Heshani Rathnayake