Research 8th Edition By Jennifer R. Gray, PhD, RN, FAAN,
Susan K. Grove, PhD, RN, ANP-BC, GNP-BC and Suzanne
Sutherland, PhD 9780323377584 Chapter 1-29 Complete Guide
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*****1. The goal of appropriate sampling in research is to
a. accurately reflect the characteristics of the target population.
b. completely define the traits of the accessible population.
c. identify all attributes of the sample population.
d. study an entire population. - ANSWER: ANS: A-accurately reflect the characteristics of the target
population.
Sampling involves selecting a group of people, events, behaviors, or other elements with which to
conduct a study. Samples are
expected to represent a target population of subjects who meet eligibility criteria for inclusion in the
study. The accessible
population are those people who are available for participation in the study. The accessible
population may not be representative of the target population. The aim of sampling is to represent
the target population, not to merely identify characteristics of the sample population. The goal of
sampling is to study a representative sample of the larger population on which conclusions about the
larger population may be drawn.
***2. A researcher wishes to evaluate the management of chemotherapy side effects in children with
acute lymphocytic leukemia (ALL). Children with ALL in this study are an example of which of the
following?
a. Accessible population
b. Element of the population
c. Sample population
d. Target population - ANSWER: ANS: D- Target population
The target population is the entire set of individuals who meet the sampling criteria. The accessible
population is that portion of the
entire population that the researcher can use. An element is an individual unit in a study. A sample is
a subset of the population that represents that population.
***3. A researcher wishes to conduct a survey of attitudes about illness among young adults with
cystic fibrosis. The researcher contacts a nearby regional medical cystic fibrosis clinic, where 250
young adults who have cystic fibrosis are seen. A group of 50 young adults are selected to complete
the survey. These 50 people are the
a. accessible population.
b. elements of the population.
c. sample population.
d. target population. - ANSWER: ANS: C-sample population.
A sample is that group of people who are representing the entire population and participating in the
study. Samples are expected to represent an entire population. The accessible population is that
portion of the entire population that the researcher can use; which, in this case, would be the 250
patients at this medical center. The target population is the entire set of individuals who meet the
sampling criteria. An element is an individual unit of a study population.
, ***4. A researcher wishes to conduct a study to determine the effects of an intervention on high
school students. In this study, high school students represent the
a. accessible population.
b. elements of the population.
c. sample population.
d. target population - ANSWER: ANS: D- target population
The target population is the entire set of individuals who meet the sampling criteria. An accessible
population is the portion of the
target population to which the researcher has reasonable access. An element is an individual unit of a
study population. A sample is
that group of people who are representing the entire population and participating in the study.
Samples are expected to represent an entire population.
***5. A researcher wishes to study the effects of a nursing intervention on children with cancer and
obtains a sample of school-age children hospitalized for cancer treatment in a local hospital. This
sample represents the
a. accessible population.
b. general population.
c. target population.
d. theoretical population - ANSWER: ANS: A-accessible population.
An accessible population is the portion of the target population to which the researcher has
reasonable access. The sample is
obtained from the accessible population. A general population is the population, not just those
meeting eligibility criteria. The
target population is the entire set of individuals who meet the sampling criteria. The theoretical
population is the same as the target population, which is the entire set of individuals who meet the
sampling criteria
***6. In a study of patients who have dementia, a researcher wishes to examine the effects of
moderate exercise on patients' abilities to perform self-care. The researcher decides to use subjects
between 70 and 80 years of age who have been diagnosed with dementia for less than 1 year. A
patient who is 65 years old meets
a. eligibility criteria.
b. exclusion criteria.
c. inclusion criteria.
d. sampling criteria - ANSWER: ANS: B-exclusion criteria.
Exclusion criteria are characteristics that the researcher does not want in the elements or subjects of
the study. Inclusion criteria,
eligibility criteria, and sampling criteria are those characteristics that the subject or element must
possess to be part of the target
population
7. The benefit to using a sample that utilizes narrow sampling criteria is that there is increased
a. control of extraneous variables.
b. generalizability.
c. heterogenicity.
d. range of values and scores. - ANSWER: ANS: A-control of extraneous variables.
A sample that is narrowly defined is more homogeneous and has greater control of extraneous
variables. The narrower the sample,