Continuous Vs Discrete Numeric Factor
When looking for a maximal response for a factor at a certain range, for example; Total DNA 100ug to 400ug, what is a more accurate and efficient way (higher power less runs) to do so?Assign the factor as a continuous factor with 2nd power (X1*X1)Assign as discrete numeric at 3 levels (100, 250, 400)In the past I always ran option A but during design analysis, the power I get for X1*X1 is pretty l...