Question

486: Experimental design can be effectively used to:

I. Choose between alternatives II. Select key factors affecting a response

III. Reduce variability of a process IV. Control uncontrollable noise factors

A. I only

B. II and III only

C. I, II, and III only

D. I, II, III, and IV

Answer 1

The correct answer is D. I, II, III and IV

Uses of DOE are to Choose between Alternatives which is also often known as a comparative experiment. This is to choose between options that are available with a common set of conditions.

Selecting the Key Factors Affecting a Response, also known as screening experiments is used to focus on a set of factors on which the attention can be more focussed.

Reduce variability of a process as there may be many internal variations due to which a process may be performing with consistency.

Control uncontrollable noise factors, this comes under making a process robust. Through experimental design, the correct factors could be found making the process robust and thus making the end product more serviceable.