Author Question: The Crohn's and Colitis Foundation of America referred the interested researcher to a local chapter ... (Read 5 times)

storky111 · **on:** Jul 8, 2018

The Crohn's and Colitis Foundation of America referred the interested researcher to a local chapter of the organization.

The local chapter agreed to send out letters on behalf of the researcher inviting potential subjects to contact the researcher if they are willing to participate in a study. Potential subjects in this situation would be described as the:
a. accessible population.
b. element.
c. sample.
d. target population.

Question 2

The adequacy of a sample would be primarily based on which of the following criteria?

a. Method chosen for sample selection
b. Representativeness of the population
c. Size of the total population
d. Willingness of subjects to participate

IAPPLET · **Reply #1 on:** Jul 8, 2018

Answer to Question 1

ANS: A
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.
The target population is the entire set of individuals who meet the sampling criteria.

Answer to Question 2

ANS: B
A sample needs to be representative in terms of characteristics, such as age, gender, ethnicity, income, and education.
Several methods serve to create an adequate sample. A sample needs to be representative in terms of characteristics, such as age, gender, ethnicity, income, and education.
Sampling methods serve to create a representative sample regardless of the size of the population. A sample needs to be representative in terms of characteristics, such as age, gender, ethnicity, income, and education.
Subjects would not be in the sample to begin with if they were not willing to participate. A sample needs to be representative in terms of characteristics, such as age, gender, ethnicity, income, and education.