Question 1

List the advantages and disadvantages of simple random sampling.

Accepted Answer

Simple random sampling has several advan...

Question 2

When executed properly, systematic random sampling creates a sample of objects or prospective respondents that is very similar in quality to a sample drawn using simple random sampling.

Accepted Answer

A) True 
 B)False

Question 3

The difference between probability sampling and nonprobability sampling is that in nonprobability sampling:

Accepted Answer

A)   each sampling unit in a defined target population has a known probability of being selected for the sample.
B)   observed differences in sample findings can be partially attributed to the existence of sampling errors.
C)   the results can be generalized to a target population within a specified margin of error.
D)   the researcher is able to judge the reliability and validity of data collected by calculating the probability.
E)   sampling error is not known.F) A) and E)
G) A) and D)

Question 4

For a given level of precision and confidence level, a researcher determines that he needs a sample size of 400. The study found that the proportion of people who smoke is 30 percent. For the same level of precision and confidence, he would need the same sample size if the proportion of those who smoke were to change to:

Accepted Answer

A)   40 percent.
B)   50 percent.
C)   60 percent.
D)   70 percent.
E)   100 percent.F) A) and C)
G) A) and B)

Question 5

Which of the following statements is True of the sample size for nonprobability samples?

Accepted Answer

A)   The sample size formula must be adjusted for confidence level before it can be used for nonprobability samples.
B)   The sample size formula must be adjusted for error tolerance before it can be used for nonprobability samples.
C)   The sample size formula must be adjusted for population variance before it can be used for nonprobability samples.
D)   Determining the sample size for nonprobability samples requires a researcher to make statistical inferences about the True population parameters.
E)   Determining the sample size for nonprobability samples is usually a subjective, intuitive judgment made by a researcher.F) C) and E)
G) A) and E)

Question 6

If the estimate of expected population proportion having a desired characteristic based on intuition is 60 percent, 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:

Accepted Answer

A)   187.
B)   369.
C)   295.
D)   196.
E)   950.F) None of the above
G) A) and D)

Question 7

Which of the following is True of convenience sampling?

Accepted Answer

A)   It is a nonprobability sampling method.
B)   It is a time-consuming process if there are a large number of respondents.
C)   It is commonly used in the later stages of research.
D)   It allows researchers to measure the representativeness of a sample.
E)   It allows researchers to generalize the data collected to a defined target population.F) A) and C)
G) A) and E)

Question 8

Which of the following is True of cluster sampling?

Accepted Answer

A)   Each cluster is assumed to be representative of the homogeneity of a target population.
B)   The prospective sampling units are selected for a sample using systematic random sampling.
C)   Area sampling is a popular form of cluster sampling.
D)   In practice, cluster sampling is difficult to implement.
E)   Cluster sampling requires a substantially large budget.F) A) and E)
G) B) and E)

Question 9

If the estimated population standard deviation based on previous studies is 20 percent, 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:

Accepted Answer

A)   48.
B)   210.
C)   61.
D)   153.
E)   196.F) C) and D)
G) B) and E)

Question 10

Multisource sampling is used when a single source generates a large or low incidence sample.

Accepted Answer

A) True 
 B)False

Question 11

Distinguish between sampling error and nonsampling error.

Accepted Answer

Sampling error is any bias that results ...

Question 12

Which of the following is a probability sampling method?

Accepted Answer

A)   Convenience sampling
B)   Cluster sampling
C)   Snowball sampling
D)   Quota sampling
E)   Judgment samplingF) A) and B)
G) C) and D)

Question 13

In any sampling plan, the first task of a researcher is to choose a method of data collection.

Accepted Answer

A) True 
 B)False

Question 14

The difference between stratified random sampling and cluster sampling is that in cluster sampling:

Accepted Answer

A)   a researcher must be able to secure a complete listing of the potential sampling units that make up a defined target population.
B)   a large number of respondents are interviewed in a relatively short time.
C)   the representativeness of a sample cannot be measured because sampling error estimates cannot be calculated.
D)   the sampling units are divided into mutually exclusive and collectively exhaustive subpopulations.
E)   a target population is separated into different groups.F) B) and E)
G) C) and D)

Question 15

_____ sampling is a probability sampling procedure in which every sampling unit has a known and equal chance of being selected.

Accepted Answer

A)   Judgment
B)   Quota
C)   Cluster
D)   Simple random
E)   ConvenienceF) All of the above
G) B) and C)

Question 16

Which of the following is True of probability sample sizes?

Accepted Answer

A)   The more precise the required sample results, the larger the sample size.
B)   The smaller the desired error, the smaller the sample size.
C)   The shorter the variability in the data being estimated, the larger the sample size needed.
D)   The higher the level of confidence desired, the smaller the sample size needed.
E)   The population standard deviation is a measure of the dispersion of the population, and its square root is referred to as the population variance.F) B) and D)
G) C) and D)

Question 17

Spectrum Inc., an automobile manufacturer, is interested in measuring the customer satisfaction of car owners. It decides to collect data from new purchasers of Spectrum cars. In this scenario, the new purchasers of Spectrum cars represent a(n)  _____.

Accepted Answer

A)   sampling unit
B)   estimated sample variance
C)   sampling frame
D)   estimated sample deviation
E)   constructF) C) and D)
G) A) and E)

Question 18

Snowball sampling prohibits the introduction of bias in a study.

Accepted Answer

A) True 
 B)False

Question 19

The skip interval in systematic random sampling is computed by multiplying the number of potential sampling units on a list by the desired sample size.

Accepted Answer

A) True 
 B)False

Question 20

In cluster sampling, each cluster is assumed to be representative of the heterogeneity of a target population.

Accepted Answer

A) True 
 B)False

Exam 6: Sampling: Theory and Methods

If the estimated population standard deviation based on previous studies is 20 percent, 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:

Correct Answer
verified

When executed properly, systematic random sampling creates a sample of objects or prospective respondents that is very similar in quality to a sample drawn using simple random sampling.

Correct Answer
verified

The difference between probability sampling and nonprobability sampling is that in nonprobability sampling:

Correct Answer
verified

Which of the following is True of cluster sampling?

Correct Answer
verified

Snowball sampling prohibits the introduction of bias in a study.

Correct Answer
verified

Which of the following statements is True of the sample size for nonprobability samples?

Correct Answer
verified

Correct Answer
verified

In any sampling plan, the first task of a researcher is to choose a method of data collection.

Correct Answer
verified

Which of the following is True of convenience sampling?

Correct Answer
verified

Distinguish between sampling error and nonsampling error.

Correct Answer
verified
Sampling error is any bias that results ...
View Answer

The difference between stratified random sampling and cluster sampling is that in cluster sampling:

Correct Answer
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Which of the following is a probability sampling method?

Correct Answer
verified

If the estimate of expected population proportion having a desired characteristic based on intuition is 60 percent, 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:

Correct Answer
verified

Spectrum Inc., an automobile manufacturer, is interested in measuring the customer satisfaction of car owners. It decides to collect data from new purchasers of Spectrum cars. In this scenario, the new purchasers of Spectrum cars represent a(n) _____.

Correct Answer
verified

The skip interval in systematic random sampling is computed by multiplying the number of potential sampling units on a list by the desired sample size.

Correct Answer
verified

In cluster sampling, each cluster is assumed to be representative of the heterogeneity of a target population.

Correct Answer
verified

Which of the following is True of probability sample sizes?

Correct Answer
verified

List the advantages and disadvantages of simple random sampling.

Correct Answer
verified
Simple random sampling has several advan...
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Multisource sampling is used when a single source generates a large or low incidence sample.

Correct Answer
verified

_____ sampling is a probability sampling procedure in which every sampling unit has a known and equal chance of being selected.

Correct Answer
verified

Exam 6: Sampling: Theory and Methods

If the estimated population standard deviation based on previous studies is 20 percent, 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:

Correct AnswerverifiedShow Answer

When executed properly, systematic random sampling creates a sample of objects or prospective respondents that is very similar in quality to a sample drawn using simple random sampling.

Correct AnswerverifiedShow Answer

The difference between probability sampling and nonprobability sampling is that in nonprobability sampling:

Correct AnswerverifiedShow Answer

Which of the following is True of cluster sampling?

Correct AnswerverifiedShow Answer

Snowball sampling prohibits the introduction of bias in a study.

Correct AnswerverifiedShow Answer

Which of the following statements is True of the sample size for nonprobability samples?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In any sampling plan, the first task of a researcher is to choose a method of data collection.

Correct AnswerverifiedShow Answer

Which of the following is True of convenience sampling?

Correct AnswerverifiedShow Answer

Distinguish between sampling error and nonsampling error.

Correct AnswerverifiedSampling error is any bias that results ...View AnswerShow Answer

The difference between stratified random sampling and cluster sampling is that in cluster sampling:

Correct AnswerverifiedShow Answer

Which of the following is a probability sampling method?

Correct AnswerverifiedShow Answer

If the estimate of expected population proportion having a desired characteristic based on intuition is 60 percent, 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:

Correct AnswerverifiedShow Answer

Spectrum Inc., an automobile manufacturer, is interested in measuring the customer satisfaction of car owners. It decides to collect data from new purchasers of Spectrum cars. In this scenario, the new purchasers of Spectrum cars represent a(n) _____.

Correct AnswerverifiedShow Answer

The skip interval in systematic random sampling is computed by multiplying the number of potential sampling units on a list by the desired sample size.

Correct AnswerverifiedShow Answer

In cluster sampling, each cluster is assumed to be representative of the heterogeneity of a target population.

Correct AnswerverifiedShow Answer

Which of the following is True of probability sample sizes?

Correct AnswerverifiedShow Answer

List the advantages and disadvantages of simple random sampling.

Correct AnswerverifiedSimple random sampling has several advan...View AnswerShow Answer

Multisource sampling is used when a single source generates a large or low incidence sample.

Correct AnswerverifiedShow Answer

_____ sampling is a probability sampling procedure in which every sampling unit has a known and equal chance of being selected.

Correct AnswerverifiedShow Answer

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Sampling error is any bias that results ...
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Correct Answer
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Simple random sampling has several advan...
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Correct Answer
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