Chapter 12

Question 1

A nurse conducted a research study that compared patient outcomes (length of hospital stay and perceived knowledge of disease process) in groups of 12-year-old patients with a diagnosis of epilepsy. Which are delimitations of this study?

Answer 1

Age and diagnosis

Question 2

Which statements are true about convenience sampling?

Answer 2

Convenience sampling is the most commonly used method of sampling
Research consumers should be skeptical about the external validity of the finding

Question 3

What can jeopardize the representativeness of the sample regardless of the technique used?

Answer 3

Sample heterogeneity

Subjects dropping out of the study

Question 4

What should be considered when estimating a sample size?

Answer 4

The design of the study
The type of sampling procedure used
The cost of collecting data

Question 5

A research study explored the meaning of health for migrant farm-worker women in a southern state. A convenience sample of 20 migrant farm-worker women was surveyed. What is the population of this study?

Answer 5

Migrant farm-worker women in Georgia

Question 6

What is the purpose of establishing inclusion and exclusion criteria?

Answer 6

To control for potential bias

Question 7

In a nationwide study, a researcher collected blood samples from patients who had been diagnosed with clinical depression. She also collected blood samples from each patient’s nuclear family. Which sample technique did she most likely use?

Answer 7

Convenience

Question 8

What is a population that meets the population criteria for a study and is available?

Answer 8

An accessible population

Question 9

What is the most important characteristic of a sample?

Answer 9

Representativeness

Question 10

What is true about both nonprobablility sampling techniques and probablility sampling techniques?

Answer 10

Probablility sampling more likely results in a representative sample

Question 11

Voluntary participation in a study may result in a sample that feels strongly about the issuer being studied. This is an issue in which type of sampling method?

Answer 11

Convenience sampling

Question 12

Using quota sampling technique introduces what type of bias?

Answer 12

External validity

Question 13

When is purposive sampling useful?

Answer 13

When a highly unusual group is being studied

Question 14

A researcher wants to study specific characteristics of adult triplets who were raised separately. Which sampling technique would the researcher most likely use?

Answer 14

Purposive

Question 15

A random sample of U.S hospitals is surveyed to discover their nurse-to-patient ratios. What is the sampling frame for this study?

Answer 15

All U.S hospitals

Question 16

Using random numbers to select a sample from a list of possible subjects is called

Answer 16

Simple random sampling

Question 17

To conduct a practice analysis of nurse aides, a researcher selected a sample of nurse aides by first obtaining a random sample of all hospitals in the United States, then acquiring a list of every aide working in those hospitals, and finally randomly selecting two aides from each hospital. What is this sampling technique called?

Answer 17

Cluster sampling

Question 18

What do methods of nonprobability sampling include?

Answer 18

Convenience
Quota
Purposive

Question 19

A researcher wanted to conduct a study of depression among men working in executive corporate positions. She located 10 subjects by advertising and then invited each of those subjects to refer their acquaintances who met the study criteria. What is this sampling technique called?

Answer 19

Snowballing

Question 20

When is bias introduced into a study?

Answer 20

When sample selection is carried out inconsistently

Question 21

Which sampling strategy is considered to be easy in terms of drawing a sample?

Answer 21

Convenience

Question 22

Which sampling strategy is considered laborious in terms of drawing a sample?

Answer 22

Simple random and stratified random

Question 23

Which sampling strategy is considered relatively easy in terms of drawing a sample?

Answer 23

Convenience and quota

Question 24

Which sampling strategy is considered time consuming in terms of drawing a sample?

Answer 24

Stratified random

Question 25

Which sampling strategy is considered to have the greatest risk of bias of any strategy?

Answer 25

Convenience

Question 26

Methods of probablility sampling include what?

Answer 26

Cluster