Hello everyone. I have a problem with my DOE in Statistica software. I have 3 dependent variables, and one independent. I have 8 runs, just like on this photo: https://postimg.org/image/g01rw6avn/ And my model has 3-way interaction. But, when i select 3-way interaction i can't get standard error and p of every coefficient. But, when i select 2-way interaction, i get everything and that's ok: https://postimg.org/image/t38x0qcdr/ But, i can't see this for 3-way interaction model. When i select that, this is all i get: https://postimg.org/image/y6vs9micl/ Where is the problem? Thanks!