Question 1

Discuss one advantage and one disadvantage of a self-administered survey as a method of data collection.

Accepted Answer

Advantages: It is an inexpensive method of conducting a survey,since it is usually mailed to a sample of people,and is therefore attractive when the number of people to be surveyed is large. 
Disadvantages: Self-administered surveys usually have low response rates and may have a relatively high number of incorrect responses due to respondents misunderstanding some questions.

Question 2

When every possible sample with the same number of observations is equally likely to be chosen,the result is called a:

Accepted Answer

A) simple random sample. 
B) stratified random sample. 
C) cluster sample. 
D) biased sample. 
A) simple random sample. 
B) stratified random sample. 
C) cluster sample. 
D) biased sample. A

Question 3

Sampling error is the result of a mistake made during the sampling process.

Accepted Answer

A) True 
 B)False  False

Question 4

Which of the following types of samples is almost always biased?

Accepted Answer

A) Simple random samples. 
B) Stratified random samples. 
C) Cluster samples. 
D) Self-selected samples. 
A) Simple random samples. 
B) Stratified random samples. 
C) Cluster samples. 
D) Self-selected samples.

Question 5

A person receives a mail survey and shreds it without opening it.This causes nonresponse error.

Accepted Answer

A) True 
 B)False

Question 6

When the population is divided into mutually exclusive sets,and then a simple random sample is drawn from each set,this is called:

Accepted Answer

A) simple random sampling. 
B) stratified random sampling. 
C) cluster sampling. 
D) selection bias. 
A) simple random sampling. 
B) stratified random sampling. 
C) cluster sampling. 
D) selection bias.

Question 7

In designing a survey,demographic questions must be avoided.

Accepted Answer

A) True 
 B)False

Question 8

In a(n)____________________ study,there is no attempt to control factors that might influence the variable of interest.

Accepted Answer

The answer of In a(n)____________________ study,there is no attempt to...

Question 9

Which of the following data collection methods is not observational?

Accepted Answer

A) A personal interview. 
B) A telephone interview. 
C) A self-administered questionnaire. 
D) An experiment. 
A) A personal interview. 
B) A telephone interview. 
C) A self-administered questionnaire. 
D) An experiment.

Question 10

Self-selected samples have no bias because they are chosen by the people themselves.

Accepted Answer

A) True 
 B)False

Question 11

____________________ error is due to mistakes made in the acquisition of data.

Accepted Answer

The answer of ____________________ error is due to mistakes made...

Question 12

Cluster samples typically cost less but they also increase sampling error.

Accepted Answer

A) True 
 B)False

Question 13

To give away a door prize,the hostess of a Tupperware party put each person's name into a hat,mixed them up,and selected one name.What sampling method was used?

Accepted Answer

A) Simple random sample 
B) Systematic sample 
C) Stratified random sample 
D) Cluster sample 
A) Simple random sample 
B) Systematic sample 
C) Stratified random sample 
D) Cluster sample

Question 14

Experimental data tend to be more expensive than observational data.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following must be avoided in designing a survey?

Accepted Answer

A) Dichotomous questions. 
B) Leading questions. 
C) Demographic questions. 
D) All of these choices are true. 
A) Dichotomous questions. 
B) Leading questions. 
C) Demographic questions. 
D) All of these choices are true.

Question 16

Is it possible for a sample to yield better results than a census,from a practical standpoint? Explain.

Accepted Answer

Yes.In any case where the popu

Question 17

The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a videocassette recorder over the past 12 months are satisfied with their products.If there are 4 different brands of videocassette recorders made by the company,the best sampling strategy would be to use a:

Accepted Answer

A) simple random sample. 
B) stratified random sample. 
C) cluster sample. 
D) self-selected sample. 
A) simple random sample. 
B) stratified random sample. 
C) cluster sample. 
D) self-selected sample.

Question 18

Experimental data tend to be more reliable,or "stronger," than survey data.

Accepted Answer

A) True 
 B)False

Question 19

A survey is an example of a(n)____________________ study.

Accepted Answer

The answer of A survey is an example of a(n)____________________...

Question 20

____________________ error refers to differences between the sample and the population.

Accepted Answer

The answer of ____________________ error refers to differences between the...

Exam 5: Data Collection and Sampling

Discuss one advantage and one disadvantage of a self-administered survey as a method of data collection.

When every possible sample with the same number of observations is equally likely to be chosen,the result is called a:

Sampling error is the result of a mistake made during the sampling process.

Which of the following types of samples is almost always biased?

A person receives a mail survey and shreds it without opening it.This causes nonresponse error.

When the population is divided into mutually exclusive sets,and then a simple random sample is drawn from each set,this is called:

In designing a survey,demographic questions must be avoided.

In a(n)____________________ study,there is no attempt to control factors that might influence the variable of interest.

Which of the following data collection methods is not observational?

Self-selected samples have no bias because they are chosen by the people themselves.

____________________ error is due to mistakes made in the acquisition of data.

Cluster samples typically cost less but they also increase sampling error.

To give away a door prize,the hostess of a Tupperware party put each person's name into a hat,mixed them up,and selected one name.What sampling method was used?

Experimental data tend to be more expensive than observational data.

Which of the following must be avoided in designing a survey?

Is it possible for a sample to yield better results than a census,from a practical standpoint? Explain.

Experimental data tend to be more reliable,or "stronger," than survey data.

A survey is an example of a(n)____________________ study.

____________________ error refers to differences between the sample and the population.

What Is Statistics

Graphical Descriptive Techniques 1

Graphical Descriptive Techniques 2

Numerical Descriptive Techniques

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Model Building

Nonparametric Statistics

Time-Series Analytics and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

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