Question 3 (4 points)

Distinguish between the terms in each of the following:

i. Experimental Unit and Measurement Unit

ii. Factor and Response Variable

iii. Berkson's Bias and Hawthorne Effect

iv. Nominal and Ordinal Response Variable

v. Stratified Random and Cluster Probability Sampling

vi. Type I Error and Power of the Test

vii. Null and Alternative Hypothesis

viii. Parametric and Non-parametric Statistics

Question 4 (3 points)

The three (3) basic principles of experimental design are Randomization, Replication, and Blocking. Briefly describe the purpose of each of the principles in the design and analysis of experiments.