Exam 6: Sampling: Theory and Methods

A college professor wants to know if the university students in the Unites States will find the new textbook that he has authored to be interesting and useful. He chooses all marketing majors at the school he teaches as his sample. He believes that this group of students will be representative of the university student population in the United States. In this scenario, the professor is most likely using:

The primary difficulty encountered with stratified sampling is determining the basis for stratifying.

In the context of the factors that play an important role in determining sample sizes with probability designs, _____ is the acceptable amount of error in a sample estimate.

Customer lists from credit card companies are a common source of sampling frames.

List some of the steps a researcher can take once he understands the basics of the central limit theorem.

List the steps to be followed in developing a sampling plan.

In the context of nonprobability sampling methods, judgment sampling is also known as purposive sampling.

In the context of the factors that play an important role in determining sample sizes with probability designs, the higher the level of confidence desired, the smaller the sample size needed.

In which stage of the sampling plan will random-digit dialing probably be considered?

Nonsampling errors reduce the overall quality of the data regardless of the data collection method.

Before polling the students in Scion School of Business, a researcher divides all the current students into groups based on their class standing, such as freshman, sophomores, and so on. Then, she randomly draws a sample of 50 students from each of these groups to create a representative sample of the entire student body in the school. Which of the following sampling methods is the researcher practicing?

If the estimated population proportion is 30 percent based on previous studies, the acceptable error is plus or minus 5 percent, and the z-value for a 95 percent level of confidence is 1.96, the needed sample size is approximately:

Jamie Nelson works for a telephone company. She is interested in determining the satisfaction of the customers with the service provided by the company (for landline customers only). She decides to collect data from the customers listed in the company's existing customer directory. In this scenario, the customer directory serves as a(n) _____.

Since quota sampling is a nonprobability sampling method, the representativeness of the sample can be measured.

Referral sampling involves identifying a set of respondents who can help a researcher identify additional people to include in a study.

Sampling errors are related to the accuracy of data, whereas nonsampling errors relate to the representativeness of a sample to a defined target population.

A population is an identifiable group of elements of interest to a researcher and pertinent to the information problem.

Briefly discuss optimal allocation sampling and multisource sampling.

In a systematic sampling study, if the sampling frame has 2,000 names and the desired sample size is 50, the skip interval should be:

Compared to sampling, it is less time-consuming and less expensive to conduct a census.