Question 1

In his qualitative research project,Chris is conducting an interview study among a white supremacist group on campus.Chris initially focuses on the group's friendship networks to determine membership and participation.In the course of his research,however,he finds out there are university administrative officials who are also affiliated with this group.Chris then decides to expand his sample to include these university officials and other students that they interact with.This sampling method which evolves and directs the sampling in certain directions is known as

Accepted Answer

The answer of In his qualitative research project,Chris is conducting...

Question 2

What is the basic process in probability proportionate to size sampling?

Accepted Answer

In probability proportionate to size sampling, larger clusters have a higher probability of being selected, but the same number of elements is sampled from each selected cluster.

Question 3

I would like to survey 50 people on their attitudes regarding premarital sex.Knowing that approximately 52% of the population is female and 48% is male,I choose to stand on the corner of High St.and Hague Ave.,and give my short survey to the first 26 women and the first 24 men who pass by the corner.I have engaged in _____________.

Accepted Answer

Quota sampling involves selecting a specific number of subjects from different subgroups to ensure representation, which is what is done by choosing 26 women and 24 men.

Question 4

When people selected for a sample are not typical or representative of the larger population from which they have been selected,we have

Accepted Answer

When people selected for a sample are not typical or representative of the larger population from which they have been selected, we have bias or an unrepresentative sample. This can lead to inaccurate conclusions and flawed analyses. Therefore, it is important to ensure that the sample is truly representative of the population.

Question 5

When might a researcher prefer to use a weighted sampling method??

Accepted Answer

A researcher might prefer to use a weighted sampling method to ensure that underrepresented populations are adequately included in the sample. This helps to improve the overall representativeness of the sample and can lead to more accurate and reliable results. Weighted sampling methods can be more time-consuming and expensive than other sampling methods, but they are often necessary to achieve a more diverse and representative sample.

Question 6

EPSEM means

Accepted Answer

EPSEM stands for "Equal Probability of Selection Method." This means that each unit or element in the population has an equal chance of being selected into the sample. This minimizes bias and increases the representativeness of the sample. Therefore, the correct answer is C.

Question 7

Sequine sampled states first,then churches,and then church members.Each of these three is known as a(n)

Accepted Answer

Sampling unit refers to the individual unit in a population that is selected for inclusion in the sample. In this case, the sampling units are the states, churches, and church members. Therefore, B is the best choice as it correctly identifies the term for the units being sampled.

Question 8

Which of the following is not a cited issue resulting in reduced response rates for telephone surveys?

Accepted Answer

Random digit dialing is actually a method used to increase response rates by reaching individuals who may not be listed in directories. Caller ID, answering machines, telemarketing, and phone lines tied up by fax or Internet access are all cited issues that can result in reduced response rates for telephone surveys.

Question 9

I would like to survey 50 people on their attitudes regarding premarital sex.I choose to stand on the corner of High St.and Hague Ave.,and give my short survey to the first 50 people who pass by the corner.I have engaged in _____________.

Accepted Answer

Reliance on available subjects or convenient sampling is the method used in this scenario as the researcher is collecting data from individuals who are easily available and accessible to them. Although this method may not be representative of the entire population's attitudes towards premarital sex, it is practical and cost-effective for the researcher to carry out the survey in this manner.

Question 10

Walker took a systematic sample from the list of members in his car club by selecting every sixth member.The list of members is known as the

Accepted Answer

The list of members from which Walker selects every sixth member is known as the sampling frame, which is the source material or device from which a sample is drawn.

Question 11

If I would like the results of my research on attitudes regarding premarital sex to be as close to the population's attitudes as possible,I would have the most accurate results with a sample of ____________ people.

Accepted Answer

A larger sample size, such as 1,000,000, is more likely to accurately reflect the population's attitudes due to reduced sampling error and increased representativeness.

Question 12

Sampling error reflects

Accepted Answer

Sampling error reflects the degree of error to be expected for a given sample design. It is the amount of variability between the sample statistic and the population parameter.

Question 13

To accumulate a sample of 500 telephone numbers,I decide to include every 20ᵗʰ telephone number in the local telephone directory beginning randomly with the letter "N." I have engaged in

Accepted Answer

The method used here is systematic sampling, as every 20th telephone number is selected from the directory. It is not simple random sampling because the selection is not completely random, and it is not snowball sampling, which involves starting with a small sample and gathering more participants through referrals. It is also not stratified sampling or quota selection, which involve dividing the population into groups and selecting participants in proportion to their representation in the population.

Question 14

A sample design in which every member of a population has an equal chance of being selected in a random sample is known as a:

Accepted Answer

EPSEM (Equal Probability of Selection Method) sample ensures that every member of a population has an equal chance of being selected in the sample. Hence, it is the best choice for a sample design that wants to ensure random selection.

Question 15

A table of random numbers is used for which design?

Accepted Answer

A table of random numbers is typically used for simple random sampling, which involves selecting individuals randomly from the entire population. The table of random numbers allows for a truly random selection process, as every individual has an equal chance of being selected.

Question 16

In order to determine which participants from my sample will be in the experimental group,and which participants will be in the control group,I decide to flip a coin.I have engaged in __________.

Accepted Answer

Flipping a coin to assign participants to groups is an example of random sampling, as it ensures each participant has an equal chance of being in either group.

Question 17

In her research project,Ella wants to study the processes involved in lesbian partners adopting children.She starts off by interviewing lesbian couples who have adopted in the past,and they in turn,give her names of other lesbian couples who have adopted.The process by which Ella gets her sample is called

Accepted Answer

Snowball sampling is the process of getting participants through referrals from other participants. Since Ella started with a small group of lesbian couples who have adopted in the past and used their referrals to obtain more participants, this is an example of snowball sampling. Simple random sampling involves randomly selecting participants from a larger population, convenience sampling involves selecting participants who are easily available or accessible, systematic sampling involves selecting every nth unit from a list, and multistage cluster sampling involves selecting participants from a series of groupings (such as selecting states randomly, then selecting cities randomly within those states). None of these methods accurately describe the process Ella used to select her sample.

Question 18

Mildred wanted to do a study of recycling club members employing a random sample.There is no master list of recycling club members in the U.S.She has only enough money to study 70 clubs.What would be the best design to use?

Accepted Answer

Since there is no master list of recycling club members in the U.S., the cluster sampling technique would be the best design to use. This involves dividing the population (in this case, all recycling clubs in the country) into clusters and selecting a random sample of clusters to study. Mildred can then study all members of the selected clusters instead of trying to locate and contact individual members from each club. This approach will be more cost-effective, efficient and feasible given her limited budget and time.

Question 19

To calculate sampling error,a researcher needs to utilize the parameter of interest,the standard error,and:

Accepted Answer

To calculate sampling error, a researcher needs to utilize the sample size along with the parameter of interest and the standard error. The population mean, sample mean, sum of parameters, and maximum parameter value are not required to calculate sampling error.

Question 20

If you are particularly concerned about how well a sample represents a population,pay particular attention to the

Accepted Answer

The sampling frame is the list or source from which the sample is drawn. If the sampling frame does not include all members of the population, or if it is biased in some way, the sample will not be representative of the population. Therefore, paying attention to the sampling frame is crucial in ensuring that the sample represents the population accurately.

Quiz 7: The Logic of Sampling