Question 1

When a telephone book database is re-arranged so that it is organized by phone number,instead of by last name,this type of database is a type of ____________________ directory.

Accepted Answer

The answer of When a telephone book database is re-arranged...

Question 2

A stratified sample in which the number of sampling units drawn from each stratum is in proportion to the population size of that stratum is called a(n):

Accepted Answer

A proportional stratified sample ensures that each stratum is represented in the sample in proportion to their population size. This helps to ensure that the sample is representative of the entire population and can produce more accurate results.

Question 3

When some elements of the target population are omitted from the sampling frame (e.g.their address is unknown),then ____________________ error occurs.

Accepted Answer

The answer of When some elements of the target population...

Question 4

All of the retail stores nationwide of Sears Roebuck and Co.are the ____________________ of Sears' stores.

Accepted Answer

The answer of All of the retail stores nationwide of...

Question 5

When the head of the marketing research department instructs field interviewers to interview owners of DVD players in a shopping mall such that they each interview 10 Sony owners,8 Panasonic owners,6 Toshiba owners,and 4 owners of other brands,this represents what type of sampling procedure?

Accepted Answer

This is a quota sample as the field interviewers are instructed to interview a specific number of owners from different brands in order to ensure representation from each brand in the final sample.

Question 6

A small number of people who are a subset of the population of interest are known as a(n)____________________ of the population.

Accepted Answer

The answer of A small number of people who are...

Question 7

A sampling procedure that assures each element in the population of an equal chance of being included in the sample is called:

Accepted Answer

Simple random sampling is the only sampling procedure that assures each element in the population of an equal chance of being included in the sample. Primary random sampling and primary sampling are not recognized sampling methods. Stratified sampling divides the population into subgroups and samples each subgroup separately, which may not provide each element in the population with an equal chance of being included in the sample.

Question 8

Which of the following is an advantage of quota sampling over probability sampling?

Accepted Answer

Quota sampling is generally lower in cost, more convenient, and faster in data collection compared to probability sampling methods.

Question 9

When a researcher conducts personal interviews with 100 percent of the salespeople within his organization,this type of study is a type of ____________________ study.

Accepted Answer

The answer of When a researcher conducts personal interviews with...

Question 10

If a researcher for Procter & Gamble selects five states randomly,and then selects 10 supermarket chains within each of these states to call for a phone survey for a test market of a new shampoo,what type of sampling procedure is being used?

Accepted Answer

The sampling procedure being used is a cluster sample, as the researcher is selecting clusters (states) and then sampling within each cluster (supermarket chains).

Question 11

Which type of nonprobability sampling technique is useful for certain types of forecasting?

Accepted Answer

Judgment sampling is useful for certain types of forecasting because it involves selecting participants based on the researcher's judgment or belief that they represent the population of interest. This technique is particularly useful when there is limited information about the population or when there are specific criteria that need to be met for the sample to be representative. Convenience sampling is not an appropriate choice for forecasting because it involves selecting individuals who are easy to access, which may not be representative of the population. Cluster and stratified sampling may be useful in certain situations, but they do not specifically address the needs of forecasting.

Question 12

If a researcher wants to select 50 customers from a sampling frame of 250 customers who have purchased at least $10,000 worth of products from his company within the past six months using a systematic sampling technique,after a random start,the researcher should select every ____ name on the list.

Accepted Answer

To use systematic sampling, the researcher needs to determine the sampling interval, which is calculated by dividing the sampling frame size by the desired sample size. In this case, the sampling interval would be 250/50 = 5. After selecting a random starting point in the sampling frame, the researcher would select every fifth name on the list to achieve a systematic sample of 50 customers. Therefore, the correct choice is C) 5th.

Question 13

Which of the following is a nonprobability sampling technique in which an experienced individual selects the sample based on his or her judgment about some appropriate characteristics required of the sample member?

Accepted Answer

A judgment sample is a nonprobability sampling technique in which an experienced individual selects the sample based on his or her judgment about some appropriate characteristics required of the sample member. The other options given, such as area sample and stratified sample, are probability sampling techniques that involve random selection of sample members.

Question 14

When a local television station sends a crew to interview joggers in the city park on a beautiful spring day,this represents what type of sample?

Accepted Answer

The crew is only interviewing joggers who happen to be in the park at that time, which is a convenience sample. They are not selecting a random group or using a specific system to choose their sample.

Question 15

Which of the following probability sampling technique is low cost and frequently used?

Accepted Answer

Cluster sampling is often low cost and frequently used because it involves dividing the population into clusters and then randomly selecting entire clusters, which reduces the cost and time of data collection.

Question 16

In which type of sampling is a subsample drawn using simple random sampling within each stratum?

Accepted Answer

Stratified sampling involves dividing the population into strata and then drawing a simple random sample from each stratum. This ensures that the sample is representative of the entire population and allows for more precise estimates of population parameters within each stratum.

Question 17

If a national political pollster selects ten states randomly,then randomly selects five counties within each state,then randomly selects five voting precincts within these counties,then randomly selects five blocks within these precincts,then randomly selects five households for door-to-door interviews about their voting intentions in the next Presidential election,this is an example of what type of sampling procedure?

Accepted Answer

This is an example of a multistage area sample because the sampling is done in multiple stages, starting with the selection of states, then counties, then precincts, then blocks, and finally households. The sample is also taken from specific areas (counties, precincts, and blocks) rather than randomly selecting from the entire population.

Question 18

When a marketing researcher wants to put together four focus groups of 18-24 year-old males who are "heavy downloaders of music" (defined as downloading 50 songs per month)and,instead of asking people at a shopping mall whether they download music from the Internet,he finds one person in the target market who qualifies,and then asks that person to suggest the names of two other males between the ages of 18-24 who download music so that the researcher can invite them to participate in the focus group,and then those people are each asked to suggest two others similar to themselves to participate in the focus group study,this procedure represents what type of sampling procedure?

Accepted Answer

This procedure represents a snowball sample, where the initial participant provides referrals to others who meet the criteria for the study, and they in turn provide referrals to others. Snowball sampling is often used in cases where the target population is difficult to identify or access, as in this case where heavy downloaders of music may not be easily identifiable via conventional sampling techniques.

Question 19

When a researcher puts the name of each person on a sampling frame list on a 3" x 5" card,shuffles the cards thoroughly,and then selects 35 names from the top of the pile of cards for a phone interview study,this is an example of what type of sampling procedure?

Accepted Answer

This is a simple random sample as each card has an equal chance of being selected and the researcher is randomly selecting from the top of the shuffled pile.

Question 20

When a marketing vice-president tells the marketing department to schedule a test market in Dallas because he feels that this city is "typical" of the composition of the target market for a new product nationally,this is an example of what type of sample?

Accepted Answer

A judgment sample is a non-probability sampling technique in which the sample is selected based on the judgment of an expert or a knowledgeable individual. In this case, the marketing vice-president is using his judgment to select Dallas as a representative market for the new product. It is not a random or probability-based sample, so options B, C, and D are not correct.

Quiz 16: Sampling Designs and Sampling Procedures