Thanks! Do you mean the 2(7-4) design? after full fold over? Trying to remember from last year. I do not think it may be explained easily in this comment. But alias patters can be calculated from the complete design, by hand. In this case I think I took it from the Design Expert software.
@@erikvanhatalo7 Thanks for your reply Erik. I managed to figure out how to get the alias pattern for res III + full fold over. I’d like to ask two questions if I may 1. If you add a full fold over to a 2(3-1)III you get a 2^3 full factorial and you can analyse this using method of contrasts, Yates method or matrix methods. However, if we take the first 8 run res III (the 2(5-2)III) then add a fold over you don’t get a full factorial. What would you call this design? Does it even have a name? I can see how to calculate effects using the method of contrasts or matrix methods but I don’t think Yates method will work here. For 2 level full and fractional factorial designs Yates can be used to calculate effects but not for other designs (such as fractional factorial with full fold over added). Does what I’ve said make sense? Sorry for such a long rambling message.
Great video Erik. How do you get the generators and the alias pattern for the full fold over?
Thanks! Do you mean the 2(7-4) design? after full fold over? Trying to remember from last year. I do not think it may be explained easily in this comment. But alias patters can be calculated from the complete design, by hand. In this case I think I took it from the Design Expert software.
@@erikvanhatalo7 Thanks for your reply Erik. I managed to figure out how to get the alias pattern for res III + full fold over. I’d like to ask two questions if I may 1. If you add a full fold over to a 2(3-1)III you get a 2^3 full factorial and you can analyse this using method of contrasts, Yates method or matrix methods. However, if we take the first 8 run res III (the 2(5-2)III) then add a fold over you don’t get a full factorial. What would you call this design? Does it even have a name? I can see how to calculate effects using the method of contrasts or matrix methods but I don’t think Yates method will work here. For 2 level full and fractional factorial designs Yates can be used to calculate effects but not for other designs (such as fractional factorial with full fold over added). Does what I’ve said make sense? Sorry for such a long rambling message.
Hi Erik, Is there a way I can contact you e.g. by email? Thanks
Contact info: www.ltu.se/staff/e/erivan-1.81005?l=en
Thanks Erik