For each of the situations described, state whether the sampling
procedure is simple random sampling, stratified random sampling,
cluster sampling, systematic sampling, or convenience sampling.
(a) All freshmen at a university are enrolled in 1 of 30
sections of a seminar course. To select a sample of freshmen at
this university, a researcher selects 4 sections of the seminar
course at random from the 30 sections and all students in the 4
selected sections are included in the sample.
cluster sampling
simple random sampling
stratified random sampling
systematic sampling
convenience sampling
(b) To obtain a sample of students, faculty, and staff at a
university, a researcher randomly selects 50 faculty members from a
list of faculty, 100 students from a list of students, and 30 staff
members from a list of staff.
cluster sampling
simple random sampling
stratified random sampling
systematic sampling
convenience sampling
(c) A university researcher obtains a sample of students at his
university by using the 85 students enrolled in his Psychology 101
class.
cluster sampling
simple random sampling
stratified random sampling
systematic sampling
convenience sampling
(d) To obtain a sample of the seniors at a particular high school,
a researcher writes the name of each senior on a slip of paper,
places the slips in a box and mixes them, and then selects 10
slips. The students whose names are on the selected slips of paper
are included in the sample.
cluster sampling
simple random sampling
stratified random sampling
systematic sampling
convenience sampling
(e) To obtain a sample of those attending a basketball game, a
researcher selects the 24th person through the door. Then, every
50th person after that is also included in the sample.
cluster sampling
simple random sampling
stratified random sampling
systematic sampling
convenience sampling