VERIFIED ANSWERS -2025-2026
Which of the following would most accurately determine causality?
a. An experiment in which researchers study the variables in chronological order
b. An experiment in which researchers manipulate multiple independent variables
c. An experiment in which researchers manipulate the dependent variable
d. An experiment in which researchers produce results that cannot be duplicated
a. An experiment in which researchers study the variables in chronological order
An epidemiological research study about influenza that obtains data regarding the transmission and
development of the illness based on patient medical histories would be considered what type of study?
a. Longitudinal
b. Cross-sectional
c. Cohort comparison
d. Retrospective
d. Retrospective
A researcher is studying the lived experience of individuals on kidney transplant waiting lists. Which
participants would join the study as a result of snowball sampling?
a. Patients who were referred to the researcher by one of the first participants in the study
b. Patients who responded to an advertisement for participants that the researcher posted online
c. Patients the researcher met in a dialysis clinic
,d. Patients randomly selected from the national kidney transplant waiting list
a. Patients who were referred to the researcher by one of the first participants in the study
A qualitative study investigating the lived experience of women younger than age of 25 who survived a
liver transplant is an example of which type of research?
a. Grounded theory
b. Phenomenological
c. Historical
d. Ethnographic
b. Phenomenological
Which of the following is an example of a pandemic?
a. An outbreak of cholera worldwide
b. An outbreak of cholera in London, England
c. An outbreak of cholera in the Southern Hemisphere
d. An outbreak of cholera in Africa
a. An outbreak of cholera worldwide
Why is the sample size in qualitative studies generally smaller than in quantitative research?
a. Qualitative studies use more accurate information collection methods than quantitative studies.
b. Qualitative research does not involve as many variables as quantitative research.
c. The sample size needed for a qualitative study depends on the randomization strategy chosen by the
researcher.
d. The sample size needed for a qualitative study depends on how quickly data saturation is reached.
d. The sample size needed for a qualitative study depends on how quickly data saturation is reached.
, Which measure could not be determined using data from a cross-sectional study of obesity and type II
diabetes?
a. An estimate of the percentage of the population that exhibits neither obesity nor type II diabetes
b. An estimate of the strength of the cause-and-effect relationship between obesity and type II diabetes
c. An estimate of the percentage of the population that exhibits both obesity and type II diabetes
d. An estimate of the magnitude of the association between obesity and type II diabetes
b. An estimate of the strength of the cause-and-effect relationship between obesity and type II
diabetes
Which is not a source of data that a researcher can use when conducting historical qualitative research?
a. Interviews
b. Artifacts
c. Direct observation
d. All of these are correct.
c. Direct observation
A nurse researcher asks several colleagues to evaluate a data collection tool to determine if the tool
appears to measure the concept under study. Which type of validity is the nurse testing for?
a. Face validity
b. Predictive validity
c. Criterion validity
d. Construct validity
a. Face validity