Question 1

A self-selected sample represents the sampled population but not the target population.

Accepted Answer

A) True 
 B)False

Question 2

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 3

An observational study involves collecting data about persons or objects by recording information about their selected characteristics of interest.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is an example of a nonsampling error?

Accepted Answer

A)  Some incorrect responses are recorded. 
B)  Responses are not obtained from all members of the sample. 
C)  Some members of the target population cannot possibly be selected for the sample. 
D)  All of these choices are true. 
A)  Some incorrect responses are recorded. 
B)  Responses are not obtained from all members of the sample. 
C)  Some members of the target population cannot possibly be selected for the sample. 
D)  All of these choices are true.

Question 5

Give three important points to consider when designing a questionnaire.

Accepted Answer

Any three of the following are acceptabl

Question 6

Give an example of a poll that involves a self-selected sample.

Accepted Answer

Choose any recent radio or tel

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

____________________ sampling is particularly useful when it is difficult or costly to develop a complete list of the population members.

Accepted Answer

The answer of ____________________ sampling is particularly useful when it...

Question 9

"Wouldn't you agree that foreign cars are better than American cars?" is an example of a well-worded survey question.

Accepted Answer

A) True 
 B)False

Question 10

Describe the difference between an observational study and an experimental study.

Accepted Answer

In an observational study, there is no a

Question 11

Which of the following causes sampling error?

Accepted Answer

A)  Taking a random sample from a population instead of studying the entire population. 
B)  Making a mistake in the process of collecting the data. 
C)  Nonresponse bias. 
D)  All of these choices are true. 
A)  Taking a random sample from a population instead of studying the entire population. 
B)  Making a mistake in the process of collecting the data. 
C)  Nonresponse bias. 
D)  All of these choices are true.

Question 12

Smoking and Heart Attacks: A medical researcher is interested in investigating the relationship between smoking and heart attacks
-Briefly describe how the researcher might design an observational study to investigate the relationship between smoking and heart attacks

Accepted Answer

Randomly sample a group of smokers and r

Question 13

When responses are not obtained from some members of the sample, bias is introduced.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following situations lends itself to cluster samples?

Accepted Answer

A)  When it is difficult to develop a complete list of the population members. 
B)  When the population members are widely dispersed. 
C)  When selecting and collecting data from a simple random sample is too costly. 
D)  All of these choices are true. 
A)  When it is difficult to develop a complete list of the population members. 
B)  When the population members are widely dispersed. 
C)  When selecting and collecting data from a simple random sample is too costly. 
D)  All of these choices are true.

Question 15

Two types of interviews that are used to collect data are ____________________ interviews and ____________________ interviews.

Accepted Answer

personal;

Question 16

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

Accepted Answer

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

Question 17

Nonresponse error occurs when someone was not selected to participate in the survey.

Accepted Answer

A) True 
 B)False

Question 18

The difference between a sample mean and the population mean is called:

Accepted Answer

A)  nonresponse error. 
B)  selection bias. 
C)  sampling error. 
D)  nonsampling error. 
A)  nonresponse error. 
B)  selection bias. 
C)  sampling error. 
D)  nonsampling error.

Question 19

Which of the following statements is true regarding the design of a good survey?

Accepted Answer

A)  The questions should be kept as short as possible. 
B)  A mixture of dichotomous, multiple-choice, and open-ended questions may be used. 
C)  Leading questions must be avoided. 
D)  All of these choices are true. 
A)  The questions should be kept as short as possible. 
B)  A mixture of dichotomous, multiple-choice, and open-ended questions may be used. 
C)  Leading questions must be avoided. 
D)  All of these choices are true.

Question 20

A researcher conducts a study where she divides subjects into two groups, gives each group a certain treatment, and records their responses. What type of data collection is being used here?

Accepted Answer

A)  An experiment. 
B)  Direct observation. 
C)  A survey. 
D)  A census. 
A)  An experiment. 
B)  Direct observation. 
C)  A survey. 
D)  A census.

A self-selected sample represents the sampled population but not the target population.

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

An observational study involves collecting data about persons or objects by recording information about their selected characteristics of interest.

Which of the following is an example of a nonsampling error?

Give three important points to consider when designing a questionnaire.

Give an example of a poll that involves a self-selected sample.

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

____________________ sampling is particularly useful when it is difficult or costly to develop a complete list of the population members.

"Wouldn't you agree that foreign cars are better than American cars?" is an example of a well-worded survey question.

Describe the difference between an observational study and an experimental study.

Which of the following causes sampling error?

Smoking and Heart Attacks: A medical researcher is interested in investigating the relationship between smoking and heart attacks -Briefly describe how the researcher might design an observational study to investigate the relationship between smoking and heart attacks

When responses are not obtained from some members of the sample, bias is introduced.

Which of the following situations lends itself to cluster samples?

Two types of interviews that are used to collect data are interviews and interviews.

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

Nonresponse error occurs when someone was not selected to participate in the survey.

The difference between a sample mean and the population mean is called:

Which of the following statements is true regarding the design of a good survey?

A researcher conducts a study where she divides subjects into two groups, gives each group a certain treatment, and records their responses. What type of data collection is being used here?

What Is Statistics

Graphical and Tabular Descriptive Techniques

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, Part 1

Inference About Comparing Two Populations, Part 2

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Review of Statistical Inference

Filters

Exam 4: Data Collection and Sampling

A self-selected sample represents the sampled population but not the target population.

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

An observational study involves collecting data about persons or objects by recording information about their selected characteristics of interest.

Which of the following is an example of a nonsampling error?

Give three important points to consider when designing a questionnaire.

Give an example of a poll that involves a self-selected sample.

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

____________________ sampling is particularly useful when it is difficult or costly to develop a complete list of the population members.

"Wouldn't you agree that foreign cars are better than American cars?" is an example of a well-worded survey question.

Describe the difference between an observational study and an experimental study.

Which of the following causes sampling error?

Smoking and Heart Attacks: A medical researcher is interested in investigating the relationship between smoking and heart attacks -Briefly describe how the researcher might design an observational study to investigate the relationship between smoking and heart attacks

When responses are not obtained from some members of the sample, bias is introduced.

Which of the following situations lends itself to cluster samples?

Two types of interviews that are used to collect data are ____________________ interviews and ____________________ interviews.

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

Nonresponse error occurs when someone was not selected to participate in the survey.

The difference between a sample mean and the population mean is called:

Which of the following statements is true regarding the design of a good survey?

A researcher conducts a study where she divides subjects into two groups, gives each group a certain treatment, and records their responses. What type of data collection is being used here?

What Is Statistics

Graphical and Tabular Descriptive Techniques

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, Part 1

Inference About Comparing Two Populations, Part 2

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Review of Statistical Inference

Filters

Two types of interviews that are used to collect data are interviews and interviews.