A _________occurs when things change during an experiment which had not been planned to change. 1 point Covariate Nest Confound replication 2. 

Question 2 If cost is low and variance is high, we should ____________ 1 point repeat randomize rinse replicate 

Question 3 Every response variable will consist of the product of factor effects and the significant factors as well as a(n) _________________________ 1 point unexplainable variation explainable variation a slope experimental error 4.

Question 4 ________is one of the most notable and efficient Response Surface Methodologies used for full, second-order, and polynomial models of three or more factors. 1 point DOE Box-Cox Transformation Box-Behnken Factor Analysis 5. 

Question 5 On an effect plot, when one line is horizontal and the other line has a slope, then there is 1 point No main effect and one interaction effect One main effect and one interaction effect Two main effects and no interaction effect One main effect and no interaction effect