Question

2. For the examples labeled (a)-(c), identify the sampling strategy (from the list given at the top of the table) that is being implemented to generate a sample of 240 OSU students for the situation described in #1 above.

For parts (d) and (e), briefly (but clearly) describe a specific approach for generating a sample of 240 OSU students that uses each of the two remaining sampling strategies NOT identified in the first three examples

Choose from these five (5) sampling strategies: Stratified, Cluster, Convenience, Random, Systematic

Name of Strategy	Description of Sampling Strategy
a	The researcher contacts 80 students who have earned over 60 credits, 80 who have earned from 30 to 60 credits, and 80 who have earned less than 30 credits.
b	Researcher contacts all students enrolled in ten different course sections that have enrollments of exactly 24 students each and that all meet on Tuesdays at 10:30 am
c	From a list of all currently enrolled OSU students, a computer program selects 240 student I.D. numbers at random, and these students are contacted for the study.
d
e

Answer 1

a) Stratified sampling has been used in which stratas are the griup if students who have earned over 60 credits 30-60 credits, and less than 30 credits.

b) Cluster sampling. here the clusters are the ten different cources students and complete enumiration have been done in these 10 clusters.

c) Random sampling. 240 students have been randomly selected from currently enrolled OSU students

d) Systematic Sampling : In systematic sampling, from the list of all currently enrolled OSU students, we select a student random and then every k-th student selected.

e) Convenience Sampling : Convenience Sampling can be done by many type, in which first example is, standing in college and asking students to answer questions.