Sampling

Question 1

Reliance on available subjects is called ________ sampling.

Answer 1

Convenience

Question 2

Sampling frame is a list of elements from which a sample is selected.

Answer 2

True

Question 3

Which is NOT an advantage of probability sampling:

• bias is reduced
• representativeness is increased
• results can be generalized
• convenient for all study designs

Answer 3

Convenient for all study designs

Question 4

The first step in sampling process is to select a sample size.

Answer 4

False

Question 5

Expected error in a sample is expressed in terms of confidence levels and confidence intervals; confidence intervals are constructed at a confidence level.

Answer 5

True

Question 6

Match sampling technique with category: probability or non-probability

• purposive
• cluster
• stratified random
• snowball

Answer 6

Cluster - probability
Stratified Random - probability
Purposive - non-probability
Snowball - non-probability

Question 7

Which is a type of probability sampling?

• hierarchical random sampling
• stratified random sampling
• elemental random sampling
• comprehensive random sampling

Answer 7

Stratified Random Sampling.

Question 8

There are two categories of sampling - probability and __________

Answer 8

Non-probability

convenience, purposive