Module 2 Quiz
Due Mar 1 at 11:59pm Points 100 Questions 20
Available Feb 27 at 12am - Mar 1 at 11:59pm Time Limit 60 Minutes
Instructions
This quiz has 20 multiple choice questions, and you will have 60 minutes in which to complete it.
wisely. Quizzes will not be re-opened or re-set because you have run out of time and did not comp
complete the quiz in one sitting. You may go back and forth between questions. The quiz will
open dates and times listed in your syllabus.
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Attempt History
Attempt Time Score
LATEST Attempt 1 31 minutes 95 out of 100
Correct answers are hidden.
Score for this quiz: 95 out of 100
Submitted Feb 28 at 10:44pm
This attempt took 31 minutes.
Question 1 5/5
pts
1/16
,28/02/2025, 22:45 Module 2 Quiz: 2252-NURS-5366-404-PRINC OF RESEARCH IN NURSING
A stimulus or activity that is measured to examine the effect created by the independent
variable best describes a(n) variable.
Independent Demographic Extraneous Dependent
In quantitative research, the independent variable (intervention, treatment, or
experimental variable) is manipulated or varied by the researcher to cause an effect on
the dependent variable. The dependent variable (response or
outcome variable) is measured to examine the effect created by the independent
variable. An independent variable is a stimulus or activity that is manipulated or varied by
the researcher to create an effect on the dependent variable. A dependent variable is the
response behavior or outcome that the researcher wants to predict or explain.
Extraneous variables exist in all
studies and can affect the measurement of study variables and the
relationships among them. Extraneous variables are of primary concern in quantitative
studies, because they can obscure one’s understanding of the relational or causal
dynamics within the studies. Demographic variables are attributes of the subjects that are
measured during the study and used to
describe the sample.
Question 2 5/5
pts
A study’s hypothesis that a new surgical approach produces safer outcomes in
immunosuppressed patients is tested in a fourteen-site research study across the
United States. Subjects at all sites are randomly selected and randomly assigned
to experimental versus control groups. What study design is used in this research
project?
Randomized controlled trial
Model testing design
Quasi-experimental design
2/16
, 28/02/2025, 22:45 Module 2 Quiz: 2252-NURS-5366-404-PRINC OF RESEARCH IN NURSING
Counterbalanced design
A randomized clinical trial (RCT) contains random assignment to
experimental and clinical groups and very often is multi-site. A fully
randomized design contains both random selection and random
assignment. Quasi-experimental designs facilitate the search for knowledge
and examination of causality in situations in which complete control is not
possible. Such designs lack a control group, or lack random assignment to
group. The model-testing design requires that all variables relevant to the
model be measured, using correlational statistics. A large, heterogeneous
sample is required. Crossover, or counterbalancing, is a strategy designed to
guard against possible erroneous conclusions resulting from carryover
effects. With counterbalancing, subjects are randomly assigned to a specific
sequencing of treatment conditions. This approach distributes the carryover
effects equally throughout all the conditions of the study, thus canceling
them out. To prevent an effect related to time, the same amount of time must
be allotted to each treatment, and the crossover point must be related to time,
not to the condition of the subject.
Question 3 5/5
pts
The director of a major hospital conducts a study to discover the types of critical
incidents that have occurred in the the hospital over the past 5 years. She compiles
a list of all the critical incidents that occurred during that time. In this study, critical
incidents serve as the.
study sample.
extraneous
variable.
dependent
variable.
3/16