Problem: An experimenter is interested in studying the effects of two factors - cutting speed (SPEED), and tool angle (ANGLE) - on the surface finish of a metallic part. Three levels of each factor are chosen (shown below).
Cutting Speed 300 500 700
Tool Angle 30 45 60
Required:
Question 1: Design a complete factorial experiment for the experimenter.
Question 2: Now, suppose two machines (A and B) are used to complete the experiment. How would you change the experiments in (a) to avoid Block Effect?