Chapter 09: Examining Populations and Samples in Research

Chapter 09: Examining Populations and Samples in Research

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

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.

 

 

ANS:  A

 

	Feedback
A	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.
B	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.
C	The aim of sampling is to represent the target population, not to merely identify characteristics of the sample population.
D	The goal of sampling is to study a representative sample of the larger population on which conclusions about the larger population may be drawn.

 

 

PTS:   1                    DIF:    Cognitive level: Applying                REF:   p. 249

 

2. A researcher wishes to evaluate the management of chemotherapy side effects in children with acute lymphocytic leukemia (ALL). Children with ALL are an example of which of the following?

a.	Accessible population
b.	Element of the population
c.	Sample population
d.	Target population

 

 

ANS:  D

 

	Feedback
A	The accessible population is that portion of the entire population that the researcher can actually use.
B	An element is an individual unit in a study.
C	A sample is a subset of the population that represents that population.
D	The target population is the entire set of individuals who meet the sampling criteria.

 

 

PTS:   1                    DIF:    Cognitive level: Applying                REF:   p. 249

 

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.

 

 

ANS:  C

 

	Feedback
A	The accessible population is that portion of the entire population that the researcher can actually use, which, in this case, would be the 250 patients at this medical center.
B	An element is an individual unit of a study population.
C	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.
D	The target population is the entire set of individuals who meet the sampling criteria.

 

 

PTS:   1                    DIF:    Cognitive level: Applying                REF:   p. 249

 

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.

 

 

ANS:  D

 

	Feedback
A	An accessible population is the portion of the target population to which the researcher has reasonable access.
B	An element is an individual unit of a study population.
C	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.
D	The target population is the entire set of individuals who meet the sampling criteria.

 

 

PTS:   1                    DIF:    Cognitive level: Applying                REF:   p. 250

 

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.

 

 

ANS:  A

 

	Feedback
A	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.
B	A general population is the population as a whole, not just those meeting eligibility criteria.
C	The target population is the entire set of individuals who meet the sampling criteria.
D	The theoretical population is the same as the target population, which is the entire set of individuals who meet the sampling criteria.

 

 

PTS:   1                    DIF:    Cognitive level: Understanding        REF:   p. 250