The district attorney’s office wants further evidence of the results found in the
bystanders and thieves study. It decides to conduct a study using data from reported
thefts over the past 5 year period. Police records indicate whether bystanders who
report a crime are alone when the crime is observed or are accompanied by one or more
people. The district attorney’s office will assess whether more theft reports indicate that
the witness was alone or with other people.
Which research design listed below is most appropriate for establishing causality?
A.Focus group
B.Individual depth interview
C.Experiment
D.Survey
E.Behavioral observation
Brittany is developing a sampling plan for a study of alcohol consumption among
college students at Metro University. She wants to ensure that students from each class
level are represented. She also wants to be able to compare students who are members
of Greek organizations to non-Greeks. Finally, she wants to consider patterns by gender.
Brittany plans to cross-reference Metro University’s student directory with membership
lists from each Greek organization on campus to develop a sampling frame.
At Metro University, there are more female students than male students. However,
because Brittany is particularly interested in male drinking behavior, she plans to
include an equal number of men and women in the sample. What type of sampling will
Brittany use?
A.Simple random
B.Quota
C.Systematic
D.Proportionate stratified
E.Disproportionate stratified