What means the dot in Effect Summary
Hello all,I have performed a doe and would now like to evaluate the data. I have an idea what the effect summary is. I'm just confused because for three effects there is only a dot instead of the logworth value. I also had to manually add the two effects "tool" and "source" (and also their interaction) via "add". Is this due to the properties of the column? Have I defined something wrong? Thanks ...