1) What is the difference between probability sampling and simple random sampling?

A. Probability sampling is a type of simple random sample.

B. In probability sampling each item has an identical chance of being chosen.

C. There is no difference.

D. Simple random sampling is a type of probability sampling.

2) A survey was mailed to a total of 400 students; 100 were randomly selected from each of the freshman, sophomore, junior and senior classes last semester. What sampling method was used?

A. Stratified sample

B. Simple random sample

C. Cluster sample

D. Systematic sample

3) A sufficiently large coverage error will result in which of the following?

A. Probability sampling

B. Inability to perform inferential statistics

C. Non-response bias

D. Statistics about the actual...