Question 1

A researcher is conducting a program evaluation of a clinic that treats people with depression.They ask each clinician to think about two or three clients that represents an "average" client in terms of symptoms, length of treatment, etc.What type of sampling is this?
A)convenience sampling
B)deviant case sampling
C)random sampling
D)typical case sampling

Accepted Answer

This is an example of typical case sampling because the researchers are asking each clinician to select clients that are representative of the typical client they see.

Question 2

Which of the following is an example of convenience sampling?
A)approaching shoppers at a mall to complete a survey
B)interviewing child welfare workers on a break from a conference
C)asking clients who are seeking services at your agency for depression to answer questions about treatment of depression
D)all of the above
E)none of the above

Accepted Answer

All the options provided are examples of convenience sampling, where participants are selected based on their easy availability and proximity to the researcher.

Question 3

Quota sampling:
A)is an attempt to be inclusive without using random sampling
B)results in some groups being over-sampled
C)can be conducted quickly and easily
D)all of the above
E)none of the above

Accepted Answer

Quota sampling attempts to be inclusive without using random sampling by setting quotas for certain demographic groups. This can result in some groups being over-sampled. Quota sampling can also be conducted quickly and easily. Therefore, all of the above statements are true.

Question 4

A sample of convenience is an example of probability sampling.

Accepted Answer

A sample of convenience is a non-probability sampling method, where the researcher selects participants based on their availability and accessibility. This method does not ensure that the sample is representative of the population, and therefore, it is not a probability sampling method.

Question 5

When conducting an evaluation of child welfare supervision practices in one state, the researchers surveyed those involved in an intervention designed to improve supervision.The supervisors in the sample represented what type of sample?
A)a convenience sample
B)a snowball sample
C)a purposeful sample
D)quota sampling

Accepted Answer

The researchers surveyed supervisors involved in an intervention designed to improve supervision, indicating that they used purposeful sampling. This type of sampling involves selecting individuals or groups who have specific knowledge or experience relevant to the research question.

Question 6

A convenience sample is one that selected randomly using a table of random numbers.

Accepted Answer

A convenience sample is not selected randomly using a table of random numbers. It is a non-probability sampling technique in which individuals are selected based on their convenient availability or accessibility.

Question 7

A major consideration in choosing a sample size is the confidence level chosen by the researcher.

Accepted Answer

The confidence level selected by the researcher determines the amount of uncertainty they are willing to tolerate in the results, and affects the calculation of the necessary sample size.

Question 8

In probability sampling, the goal is to choose a sample that is reflective of the larger population.

Accepted Answer

Probability sampling aims to obtain a sample that accurately represents the population, making it a representative sample.

Question 9

When evaluating the implementation of a medication algorithm program in mental health, you notice that the average times a client changes medication dosage is 2.However, you find that for a few clients, they have had medications changed 8 or more times.You would like to interview them regarding their experiences in the program.Looking for individuals to interview such as these who are extreme on a range of factors is known as what?
A)convenience sampling
B)deviant case sampling
C)a purposeful sample
D)typical case sampling

Accepted Answer

Deviant case sampling involves intentionally seeking out individuals who are extreme on a range of factors in order to gain a deeper understanding of the phenomenon being studied. In this case, seeking out clients who have had their medication changed 8 or more times would provide valuable insight into the implementation of the medication algorithm program. Convenience sampling involves selecting participants who are easily accessible, typical case sampling involves selecting participants who represent the average or typical experience, and purposeful sampling involves selecting participants based on specific criteria deemed relevant to the study. None of these other sampling methods would be as relevant to the goal of studying the experiences of clients who have undergone multiple medication changes.

Question 10

You are conducting a study on illegal immigrants and employment history.You cannot post ads designed to elicit a sample due to the fear of the population regarding deportation if discovered.You know an illegal immigrant and have gained their trust.They agree to talk to you anonymously.After the interview, you ask the person to refer another immigrant to you to interview, also anonymously.After that interview, you ask for another referral from that participant, and so on.This method of obtaining a sample is known as
A)purposeful sampling.
B)quota sampling.
C)snowball sampling.
D)random sampling.

Accepted Answer

Snowball sampling is the method of obtaining a sample through referrals from existing participants. This is a suitable method in situations where the population is hard to reach or access, as in the case of illegal immigrants who fear deportation. The method allows the researcher to gain access to the population through the connections of the existing participants. Purposeful sampling, quota sampling, and random sampling may not be appropriate in this situation as they require a defined sampling frame or criteria, which may not be feasible in the case of illegal immigrants.

Quiz 8: Sampling

A researcher is conducting a program evaluation of a clinic that treats people with depression.They ask each clinician to think about two or three clients that represents an "average" client in terms of symptoms, length of treatment, etc.What type of sampling is this?

Which of the following is an example of convenience sampling?

Quota sampling:

A sample of convenience is an example of probability sampling.

When conducting an evaluation of child welfare supervision practices in one state, the researchers surveyed those involved in an intervention designed to improve supervision.The supervisors in the sample represented what type of sample?

A convenience sample is one that selected randomly using a table of random numbers.

A major consideration in choosing a sample size is the confidence level chosen by the researcher.

In probability sampling, the goal is to choose a sample that is reflective of the larger population.