Question

The Student Government Association (SGA) is interest in surveying the current study body on their opinions of food service on campus. Because the university cannot disclose a list of students due to privacy laws, the SGA asks the university to send a survey link to all current students on behalf of the SGA.

		Simple random
		Stratified random
		Cluster
		Two-stage random
		Convenience
		Purposive
		No Sampling

What type of sampling is used in the following situation?   A researcher is interested in interviewing teachers in the Little Rock School District. He randomly selects 10 schools in the district and obtains teacher rosters for those schools. He then randomly selects 3 teachers from each list to interview.  

		Simple random
		Stratified random
		Cluster
		Two-stage random
		Convenience
		Purposive
		No Sampling

What type of sampling is used in the following situation?   A researcher is interested in interviewing teachers in the Little Rock School District. He randomly selects 10 schools in the district and obtains teacher rosters for those schools. He then randomly selects 3 teachers from each list to interview.  

		Simple random
		Stratified random
		Cluster
		Two-stage random
		Convenience
		Purposive
		No Sampling

Answer 1

Question 1: Answer :

Since SGA asks the university to send a survey link to all current students on behalf of the SGA, there is no any sampling is involved in this process.

No sampling.

Question 2: Answer :

Two stage random sampling

In the two-stage sampling design the population is partitioned into groups, like cluster sampling, but in this design new samples are taken from each cluster sampled. The clusters are the first stage units to be sampled, called primary or first sampling units. The second-stage units are the elements of those clusters, called sub-units, secondary or second sampling units.