Why would a nurse researcher choose not to use a survey study design? a
. Data analysis is limited with a survey design.
Why would a nurse researcher choose to use a correlational study of multiple variables?
A nurse researcher would choose to use a correlational study of multiple variables for which purpose? C A multivariate
correlational study examines relationships between or among variables
. 6.
Why should a nurse researcher want to limit or eliminate extraneous variables in a study?
Why should a nurse researcher want to limit or eliminate extraneous variables in a study? …
Extraneous variables compete with the independent variables as explanations of the study’s outcome
. d. Manipulation of the extraneous variables increases the risk for researcher bias in the study’s outcomes.
When might a researcher decide to use a correlational design instead of an experimental design?
Another reason that researchers would choose to use a correlational study rather than an experiment is that
the statistical relationship of interest is thought to be causal
, but the researcher cannot manipulate the independent variable because it is impossible, impractical, or unethical.
Why would a nursing researcher hesitate non probability sampling?
A nurse researcher would hesitate to use nonprobability sampling because: a.
It will result in reduced or limited generalizability.
… It will require large, unmanageable sample sizes.
Why is the administration of a pretest a cause for concern in a research study?
Why would a researcher need to be concerned about the administration of a pretest and posttest in a research study?
It is a threat to internal validity
. … Which design type allows researchers to manipulate more than one intervention during the same experiment?
Why would you choose to design a longitudinal study rather than conduct an experiment quizlet?
Longitudinal studies
are less time intensive than experiments
. … Some relationship factors cannot be manipulated in experiments. “Do couples who cohabit before marriage have less conflict as newlyweds than couples who do not cohabit before marriage?” This is an example of a(n) ________ research question.
Which situation presents a threat to internal validity?
Mortality
presents a threat to internal validity if subjects who are more likely to drop have something in common. For example, a researcher may be interested in testing whether having a sponsor in a support group leads to increased self-esteem.
Which activity represents attention to credibility in a qualitative study?
Which activity represents attention to credibility in a qualitative study?
Providing direct quotations from study participants
.
Why does a nurse researcher randomly assign subjects to experimental versus control groups?
Random assignment of subjects to experimental and control groups has which of these effects? C (Random assignment to groups
helps to ensure that other (extraneous) variables that could affect changes in the dependent variable are equally distributed within groups
, thus reducing systematic bias.)
What are the 4 types of research design?
There are four main types of Quantitative research:
Descriptive, Correlational, Causal-Comparative/Quasi-Experimental, and Experimental Research
. attempts to establish cause- effect relationships among the variables. These types of design are very similar to true experiments, but with some key differences.
Which of the following is thought to be the most accurate type of experimental research?
The true experimental research design
relies on statistical analysis to approve or disprove a hypothesis. It is the most accurate type of experimental design and may be carried out with or without a pretest on at least 2 randomly assigned dependent subjects.
How do you tell if a study is experimental or correlational?
- In an experimental design, you manipulate an independent variable and measure its effect on a dependent variable.
- In a correlational design, you measure variables without manipulating any of them.
What are the 4 types of non-probability sampling?
Common non-probability sampling methods include
convenience sampling, voluntary response sampling, purposive sampling, snowball sampling, and quota sampling
.
Why do researchers use non-probability sampling?
Non-probability sampling is most useful for exploratory studies like a pilot survey (deploying a survey to a smaller sample compared to pre-determined sample size). Researchers use this method in studies where
it is impossible to draw random probability sampling due to time or cost considerations
.
What are the advantages of non-probability sampling?
A major advantage with non-probability sampling is that—compared to probability sampling—
it’s very cost- and time-effective
. It’s also easy to use and can also be used when it’s impossible to conduct probability sampling (e.g. when you have a very small population to work with).
