I have to produce a model equation for a 3 factor 3 level half factorial in the form of y=B0+B1X1+B2X2+B3X3+B12X1X2+B13X1X3+B23X2X3+B123X1X2X3 using a 3 factor 3 level half factorial. I have never used JMP before but it is required for my class. I am not sure how to get the coefficients for my equation. I have found a lot of information about full factorials but not much for this. Do I use the discrete numeric, continuous, or categorical factors? Does the Taguchi design for work this method?