Deck 15: Securing Samples and Performance Sites

Question 1

A unit of analysis refers to the scale of measurement utilized when analyzing the demographics of a sample.

Answer 1

False

Question 2

A key distinction of quantitative designs is that when securing a sample, it is acceptable that the researcher's sampling plans change during the study (including the number, type, and description of the subjects to be studied).

Answer 2

False

Question 3

In qualitative research, researchers should use theoretically defined statistical methods of sampling as required for making inferences about the population of interest.

Answer 3

False

Question 4

Some examples of different types of performance sites in occupational therapy research include university laboratory facilities, inpatient units, outpatient rehabilitation centers, skilled nursing facilities, and community-based organizations.

Question 5

Because sampling error represents the degree to which the sample is representative of the population, the larger the sample error, the less representative the sample is to the population and the lower the external validity.

Question 6

The steps involved in sampling include these five critical steps:

A) Define the population of interest, unit of analysis, performance site, and sampling approach, as well as implement the sampling procedures.
B) Define the population of interest, unit of analysis, performance site, and sampling approach, as well as obtain approvals for entry.
C) Define the population of interest, unit of analysis, performance site, and documentation required, as well as identify a specific time frame.
D) Define the population of interest, unit of analysis, and documentation required, ensure diverse sampling, and identify a specific time frame.

Question 7

How a subject pool is selected depends on several issues. Which of the following factors would not be included among those that define the sample?

A) The specific research question
B) The impact of the research proposal
C) The accessibility of the population of interest
D) The research approach (quantitative or qualitative)

Question 8

Which of the following would not be a key consideration for limiting potential threats to external validity?

A) Location of the study
B) Statistical approach of the study
C) People recruited for the study
D) Timing of the study

Question 9

When calculating a sample size, which of the following statements is incorrect regarding the relationship among variables?

A) As the sample size increases, the statistical power increases.
B) If variation in outcome decreases, the statistical power increases.
C) If variation in outcome increases, the sample size needs to decrease.
D) If the effect size decreases, the sample size needs to increase.

Question 10

Please match the definition with sampling approache appropriate.

-The recruitment of specific individuals to ensure appropriate representation in the sample

A) Purposive sampling
B) Stratified sampling
C) Network sampling
D) Quota sampling
E) Systematic sampling

Question 11

Please match the definition with sampling approache appropriate.

-The deliberate selection of individuals by the researcher based on certain predetermined criteria (usually stated as inclusion and exclusion criteria)

A) Purposive sampling
B) Stratified sampling
C) Network sampling
D) Quota sampling
E) Systematic sampling

Question 12

Please match the definition with sampling approache appropriate.

-A random sample, but the selection is from identified subgroups within the population

A) Purposive sampling
B) Stratified sampling
C) Network sampling
D) Quota sampling
E) Systematic sampling

Question 13

Please match the definition with sampling approache appropriate.

-An equivalent to random sampling, where subjects are identified from a population list according to a numeric pattern

A) Purposive sampling
B) Stratified sampling
C) Network sampling
D) Quota sampling
E) Systematic sampling

Question 14

Please match the definition with sampling approache appropriate.

-A method in which initially identified subjects provide names of others who may meet the study criteria

A) Purposive sampling
B) Stratified sampling
C) Network sampling
D) Quota sampling
E) Systematic sampling