Question 1
Which of the following is used when different layers are apparent in the population and each layer is randomly sampled?
◦ Systematic sampling
◦ Stratified sampling
◦ Cluster sampling
◦ Simple random sampling
Question 2
Which of the following refers to the basic level of investigation?
◦ A sample
◦ A sample unit
◦ A subpopulation
◦ A sample frame