Question 1

A researcher is developing a body of knowledge for the development of a formal questionnaire.Part of the process involves conducting four focus groups.Outline an appropriate sampling strategy for generating the focus-group respondents.

Accepted Answer

The answer of A researcher is developing a body of...

Question 2

The key to making accurate predictions about the characteristics or behavior of a large population on the basis of a relatively small sample lies in the way in which individuals are selected for the sample.

Accepted Answer

The statement is true. The process of selecting individuals for a sample should be random and representative in order to make accurate predictions about a larger population.

Question 3

Simple random samples require a detailed listing of the population of interest.

Accepted Answer

Simple random samples require a detailed listing of the population of interest in order to randomly select individuals from it.

Question 4

Researchers prefer simple random samples to stratified samples because of their potential for greater statistical efficiency.

Accepted Answer

This statement is actually false. Stratified samples can have greater statistical efficiency because they ensure representation of subgroups within a population, reducing the margin of error and increasing precision. Simple random samples, while also random, do not take into account the potential variations within a population.

Question 5

There are four types of probability sampling methods: simple random sampling,systematic sampling,quota sampling,and cluster sampling.

Accepted Answer

Quota sampling is not a probability sampling method; it is a type of non-probability sampling. The four main types of probability sampling methods are simple random sampling, systematic sampling, stratified sampling, and cluster sampling.

Question 6

Convenience samples should not be used in marketing research.

Accepted Answer

Convenience samples can be used in marketing research, especially for exploratory purposes or when other sampling methods are impractical or too costly, despite their limitations in generalizability.

Question 7

Developing an appropriate sampling frame is often one of the easiest things that a researcher faces.

Accepted Answer

Developing an appropriate sampling frame can be one of the most challenging aspects of conducting research. It involves identifying the specific population or group of individuals that the researcher wants to study, which may be difficult depending on the nature of the research question and the available data sources. It often requires careful consideration of factors such as sampling methods, inclusion and exclusion criteria, and potential biases that may affect the representativeness of the sample.

Question 8

When and why does sampling error occur? If the sampling error emanates from some type of improper execution of the sampling plan what is it called? Can it be measured? What kind of sampling error can be measured and how can it be reduced?

Accepted Answer

The answer of When and why does sampling error occur?...

Question 9

From the standpoint of statistical efficiency,cluster samples are generally less efficient than other types of probability samples.

Accepted Answer

Cluster samples are generally less efficient than other types of probability samples because they involve sampling at two stages, first selecting clusters and then selecting individuals within those clusters. This results in greater variability within clusters and lower precision compared to other sampling designs such as simple random sampling or stratified random sampling. However, cluster sampling may be more cost-effective and logistically feasible in certain situations, such as when studying populations that are geographically dispersed or difficult to reach.

Question 10

The final step in the sampling process is execution of the operational sampling plan.

Accepted Answer

The final step in the sampling process is indeed the execution of the operational sampling plan, which involves selecting the sample units, collecting the data, and analyzing the results according to the predetermined criteria and objectives.

Question 11

Increasingly researchers are turning to methodologies that involve blending sample based on interviews collected by different means such as SMS,mail and telephone.

Accepted Answer

This statement is true as there is a growing trend among researchers to employ mixed-mode surveys involving data collection through multiple means such as SMS, mail, and telephone interviews. This approach enables a diverse and representative sample and enhances the reliability and validity of the research findings.

Question 12

Systematic sampling includes a compromise for expediency and has a very small risk of producing a nonrepresentative sample.

Accepted Answer

Systematic sampling involves selecting every kth element from a population, which can be a convenient and efficient method. As long as the sampling interval is random, there is a low risk of introducing bias or producing a nonrepresentative sample. Therefore, systematic sampling can be a reliable and valid approach to sampling, especially for large populations.

Question 13

Multistage area (probability)sampling is used for national surveys or surveys that cover large regional areas.

Accepted Answer

Multistage area sampling is indeed used for national surveys or surveys that cover large regional areas.

Question 14

Proportional allocation is also referred to as optimal allocation.

Accepted Answer

Proportional allocation and optimal allocation are different strategies used in sampling. Proportional allocation distributes samples based on the proportion of the population in each stratum, while optimal allocation distributes samples based on minimizing variance for a given sample size, taking into account the variability within each stratum and the cost of sampling.

Question 15

A researcher invokes a pilot sample and finds that respondents from households
with less than $50,000 annual income respond very differently than respondents from households with greater than $50,000 annual income,with regard to the key survey questions.In addition,the researcher's preliminary results show greater variance among respondents in the over $50,000 households.Given the preceding,which probability sampling method should the researcher invoke and why?

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The answer of A researcher invokes a pilot sample and...

Question 16

Distinguish between probability and nonprobability samples.What are the advantages and disadvantages of each?

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The answer of Distinguish between probability and nonprobability samples.What are...

Question 17

Suppose a marketing researcher was doing a survey of snow skiers residing in South Louisiana,for the specific purpose of estimating the feasibility of offering discounted snow ski rental equipment.The idea was gauge the need,interest and price expectations of these snow skiers as they head to Colorado or some other snow skiing destination.What type of sample would be needed?

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The answer of Suppose a marketing researcher was doing a...

Question 18

Characterize the ideal sampling frame.How often is an "ideal" sampling frame available? If an "ideal" sampling frame isn't available,what kind of sample frame is needed?

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The answer of Characterize the ideal sampling frame.How often is...

Quiz 13: Basic Sampling Issues