Question 1

A researcher cannot pinpoint the actual average family income in a city unless he conducts a census study.

Accepted Answer

A census study involves collecting data from every member of the population, which allows for an accurate calculation of the actual average family income. Other methods, like surveys or samples, may only provide estimates.

Question 2

Calculation of the sampling interval is important in which sampling plan?

Accepted Answer

In a systematic sample, the sampling interval is calculated to select every nth item from a list, ensuring a consistent and evenly distributed sample.

Question 3

With a given precision range, the amount of confidence is indirectly related to the size of the sample.

Accepted Answer

The amount of confidence is directly related to the size of the sample; larger samples tend to provide more reliable estimates, increasing confidence levels.

Question 4

In practice, simple random sampling should be strongly considered

Accepted Answer

Simple random sampling is practical in all the mentioned situations: small populations, telephone surveys with random digit dialing, and when population units are stored electronically.

Question 5

If a newspaper editor asks a reporter to interview thirty males and thirty females from each of three geographical areas of a particular city for a prospective story, what type of sampling procedure is being used?

Accepted Answer

This is a quota sample because the editor specifies a fixed number of males and females to be interviewed from each geographical area, ensuring that specific subgroups are represented.

Question 6

Nonprobability sampling is an objective procedure in which the probability of selection for the population units can______________be determined.

Accepted Answer

Nonprobability sampling is a subjective procedure where the probability of selection for the population units cannot be determined.

Question 7

Many online panels in use today are essentially large quota samples.

Accepted Answer

Many online panels are designed to match certain demographic quotas, making them similar to quota samples, which aim to reflect the characteristics of a larger population.

Question 8

Jane Doe wants to administer a short survey on "student driving habits" to a representative sample of students at the local university. She secured a list of students from the student directory. She assigned each student a unique number and then used a random number table to select her sample. Jane Doe is most likely using a

Accepted Answer

Jane Doe is using a probability sampling technique because she is assigning each student a unique number and using a random number table to select her sample, which ensures that each student has an equal chance of being selected.

Question 9

A(n)______________is a subset of elements from a larger group of objects.

Accepted Answer

The answer of A(n)______________is a subset of elements from a...

Question 10

The goal with cluster sampling is to have clusters that are as homogeneous as possible.

Accepted Answer

The goal of cluster sampling is to have clusters that are as heterogeneous as possible, representing the diversity of the entire population within each cluster.

Question 11

In general, populations that are larger in number are easier to locate.

Accepted Answer

Larger populations are more likely to be found because they occupy a larger area and have a greater number of individuals, making them more visible and easier to locate.

Question 12

Cluster sampling is limited to situations in which a sampling frame of population units is not readily available.

Accepted Answer

Cluster sampling can be used even when a sampling frame is available, but it is often used when a sampling frame is not readily available.

Question 13

If we were to ask college students, "To what extent do they value a college degree?" which type of sample plan would be most appropriate?

Accepted Answer

A stratified sample is appropriate because it allows for representation from each group (freshmen, sophomore, junior, and senior) and accounts for potential differences in responses across these strata.

Question 14

If you have five friends who tell you they all have had a great experience with their purchase of a Chevrolet and you used this evidence to decide to buy a Chevrolet, you would be using

Accepted Answer

You are using inference because you are drawing a conclusion based on the experiences of your friends, assuming that your experience will be similar.

Question 15

In stratified sampling, a sample of population units is randomly selected from each stratum of the population.

Accepted Answer

Stratified sampling involves dividing the population into distinct subgroups or strata and then randomly selecting samples from each stratum to ensure representation of all subgroups.

Question 16

Andy was a senior in college majoring in marketing. He received a call to participate in a survey on behalf of a company that was targeting graduating seniors. At the end of the survey, Andy was asked for the name of a friend who was also a senior in marketing. This is an example of a "snowball" sample.

Accepted Answer

In a snowball sample, existing study subjects recruit future subjects from among their acquaintances, creating a "snowball" effect. Andy being asked to provide a friend's name fits this sampling method.

Question 17

Respondents can misunderstand, guess, lose attention, suffer distractions, and fatigue. These are all examples of unintentional respondent error and they all contribute to nonsampling error.

Accepted Answer

The answer of Respondents can misunderstand, guess, lose attention, suffer...

Question 18

The PGA conducts a study in which they use a simple random sample of 600 golfers. They examine the data from the sample and calculate that 28% of them own golf clubs made in the USA. The 28% is the

Accepted Answer

The 28% is a sample statistic because it is a measure calculated from the sample data, representing the proportion of golfers in the sample who own golf clubs made in the USA.

Question 19

An advantage of area samples is that the people who live in the same area often share many characteristics.

Accepted Answer

The answer of An advantage of area samples is that...

Question 20

In simple random sampling, every population unit has an equal chance of being chosen.

Accepted Answer

In simple random sampling, each member of the population has an equal probability of being selected, ensuring that the sample is representative of the population.

Quiz 14: Developing the Sampling Plan