NURS 5366 Module 2 Quiz with 100% Answered (Graded A+)

A stimulus or activity that is measured to examine the effect created by the independent variable best describes a(n) _____ variable. In quantitative research, the independent variable (intervention, treatment, or experimental variable) is manipulated or varied by the researcher to cause an effect on NURS 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. 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?