NURS 5366 Module 2 Quiz PRINCIPLES OF RESEARCH IN NURSING; Questions With Answers 2024/2025 (GRADED A+)

NURS 5366 Module 2 Quiz PRINCIPLES OF RESEARCH IN NURSING; Questions With Answers 2024/2025 (GRADED A+) A stimulus or activity that is measured to examine the effect created by the independent variable best describes a(n) _____ variable. Independent Dependent Demographic Extraneous 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. 3/19 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? Quasi-experimental design Model testing design Counterbalanced design Randomized controlled trial 4/19 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___________. extraneous variable. study sample. dependent variable. EMAIL ME: 5/19 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. Incorrect Question 4 0 / 5 pts How does a comparative descriptive design differ from a typical descriptive design? It examines the relationship between multiple variables, whereas a typical descriptive design only evaluates the effect of one independent variable on one dependent variable. It differs in name only; they are essentially the same design. It compares changes in phenomenon over time, whereas the typical descriptive design focuses on only one time period. It describes data from two different groups, whereas a typical descriptive design focuses on a single group. EMAIL ME: 6/19 The commonly used descriptive study design examines characteristics of a single sample. It identifies a phenomenon of interest and the variables within the phenomenon, develops conceptual and operational definitions of the variables, and describes the variables. The comparative descriptive design examines and describes differences in variables in two or more groups that occur naturally in the setting. Descriptive statistics and inferential statistical analyses may be used to examine differences between or among groups. Question 5 5 / 5 pts In the following hypothesis, what is the independent variable? There is no measurable difference in incidence of acne in 15-year-olds who are placed on a chocolate-free diet. Fifteen-year-olds Chocolate-free diet Acne