Question 1

Which of the following is numerical data?

Accepted Answer

A) Your gender 
B) The brand of cell phone you own 
C) Whether you have an American Express card 
D) The fuel economy (MPG)of your car 
A) Your gender 
B) The brand of cell phone you own 
C) Whether you have an American Express card 
D) The fuel economy (MPG)of your car

Question 2

Ordinal data are data that can be ranked based on some natural characteristic of the items.

Accepted Answer

A) True 
 B)False

Question 3

Nominal data refer to data that can be ordered in a natural way.

Accepted Answer

A) True 
 B)False

Question 4

Which survey method would you recommend to survey opinions of airline passengers about the cleanliness of the restrooms in the Detroit airport? Why not the others?

Accepted Answer

This is a difficult sampling problem.Res

Question 5

Explain the concept of a focus group.In what ways does a focus group resemble a survey? Why is a moderator desirable? What else is required to make a successful focus group?

Accepted Answer

Data collected in a focus group are rich

Question 6

The number of checks processed at a bank in a day is an example of categorical data.

Accepted Answer

A) True 
 B)False

Question 7

Categorical data are also referred to as nominal or qualitative data.

Accepted Answer

A) True 
 B)False

Question 8

The weight of a bag of dog food is an example of discrete data.

Accepted Answer

A) True 
 B)False

Question 9

Running times for 500 runners in a 5k race would be a univariate data set.

Accepted Answer

A) True 
 B)False

Question 10

A Likert scale with an even number of scale points between "Strongly Agree" and "Strongly Disagree"

Accepted Answer

A) cannot have equal scale distances. 
B) is intended to prevent "neutral" choices. 
C) must have a verbal label on each scale point. 
D) is rarely used in surveys. 
A) cannot have equal scale distances. 
B) is intended to prevent "neutral" choices. 
C) must have a verbal label on each scale point. 
D) is rarely used in surveys.

Question 11

Ordinal data can be treated as if it were nominal data but not vice versa.

Accepted Answer

A) True 
 B)False

Question 12

Using a sample to make generalizations about an aspect of a population is called

Accepted Answer

A) data mining. 
B) descriptive statistics. 
C) random sampling. 
D) statistical inference. 
A) data mining. 
B) descriptive statistics. 
C) random sampling. 
D) statistical inference.

Question 13

An advantage of a systematic sample is that no list of enumerated data items is required.

Accepted Answer

A) True 
 B)False

Question 14

An investment firm rates bonds for AardCo Inc.as "B+," while bonds of Deva Corp.are rated "AA." Which level of measurement would be appropriate for such data?

Accepted Answer

A) Nominal 
B) Ordinal 
C) Interval 
D) Ratio 
A) Nominal 
B) Ordinal 
C) Interval 
D) Ratio

Question 15

Which statement is correct?

Accepted Answer

A) Judgment sampling is preferred to systematic sampling. 
B) Sampling without replacement introduces bias in our estimates of parameters. 
C) Cluster sampling is useful when strata characteristics are unknown. 
D) Focus groups usually work best without a moderator. 
A) Judgment sampling is preferred to systematic sampling. 
B) Sampling without replacement introduces bias in our estimates of parameters. 
C) Cluster sampling is useful when strata characteristics are unknown. 
D) Focus groups usually work best without a moderator.

Question 16

Which of the following is true?

Accepted Answer

A) The type of charge card used by a customer (Visa,MasterCard,AmEx)is ordinal data. 
B) The duration (minutes)of a flight from Boston to Minneapolis is ratio data. 
C) The number of Nobel Prize-winning faculty at Oxnard University is continuous data. 
D) The number of regional warehouses owned by Jankord Industries is ordinal data. 
A) The type of charge card used by a customer (Visa,MasterCard,AmEx)is ordinal data. 
B) The duration (minutes)of a flight from Boston to Minneapolis is ratio data. 
C) The number of Nobel Prize-winning faculty at Oxnard University is continuous data. 
D) The number of regional warehouses owned by Jankord Industries is ordinal data.

Question 17

A random sample is one in which the

Accepted Answer

A) probability that an item is selected for the sample is the same for all population items. 
B) population items are selected haphazardly by experienced workers. 
C) items to be selected from the population are specified based on expert judgment. 
D) probability of selecting a population item depends on the item's data value. 
A) probability that an item is selected for the sample is the same for all population items. 
B) population items are selected haphazardly by experienced workers. 
C) items to be selected from the population are specified based on expert judgment. 
D) probability of selecting a population item depends on the item's data value.

Question 18

By taking a systematic sample,in which we select every 50th shopper arriving at a specific store,we are approximating a random sample of shoppers.

Accepted Answer

A) True 
 B)False

Question 19

Your weight recorded at your annual physical would not be ratio data,because you cannot have zero weight.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is a correct statement?

Accepted Answer

A) Choosing the third person listed on every fifth page of the phone book is stratified sampling. 
B) An advantage of a systematic sample is that no list of enumerated data items is required. 
C) Convenience sampling is used to study shoppers in convenience stores. 
D) Judgment sampling is an example of true random sampling. 
A) Choosing the third person listed on every fifth page of the phone book is stratified sampling. 
B) An advantage of a systematic sample is that no list of enumerated data items is required. 
C) Convenience sampling is used to study shoppers in convenience stores. 
D) Judgment sampling is an example of true random sampling.

Which of the following is numerical data?

Ordinal data are data that can be ranked based on some natural characteristic of the items.

Nominal data refer to data that can be ordered in a natural way.

Which survey method would you recommend to survey opinions of airline passengers about the cleanliness of the restrooms in the Detroit airport? Why not the others?

Explain the concept of a focus group.In what ways does a focus group resemble a survey? Why is a moderator desirable? What else is required to make a successful focus group?

The number of checks processed at a bank in a day is an example of categorical data.

Categorical data are also referred to as nominal or qualitative data.

The weight of a bag of dog food is an example of discrete data.

Running times for 500 runners in a 5k race would be a univariate data set.

A Likert scale with an even number of scale points between "Strongly Agree" and "Strongly Disagree"

Ordinal data can be treated as if it were nominal data but not vice versa.

Using a sample to make generalizations about an aspect of a population is called

An advantage of a systematic sample is that no list of enumerated data items is required.

An investment firm rates bonds for AardCo Inc.as "B+," while bonds of Deva Corp.are rated "AA." Which level of measurement would be appropriate for such data?

Which statement is correct?

Which of the following is true?

A random sample is one in which the

By taking a systematic sample,in which we select every 50th shopper arriving at a specific store,we are approximating a random sample of shoppers.

Your weight recorded at your annual physical would not be ratio data,because you cannot have zero weight.

Which of the following is a correct statement?

Overview of Statistics

Describing Data Visually

Descriptive Statistics

Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions and Estimation

One-Sample Hypothesis Tests

Two-Sample Hypothesis Tests

Analysis of Variance

Simple Regression

Multiple Regression

Chi-Square Tests

Filters

Exam 2: Data Collection

Which of the following is numerical data?

Ordinal data are data that can be ranked based on some natural characteristic of the items.

Nominal data refer to data that can be ordered in a natural way.

Which survey method would you recommend to survey opinions of airline passengers about the cleanliness of the restrooms in the Detroit airport? Why not the others?

Explain the concept of a focus group.In what ways does a focus group resemble a survey? Why is a moderator desirable? What else is required to make a successful focus group?

The number of checks processed at a bank in a day is an example of categorical data.

Categorical data are also referred to as nominal or qualitative data.

The weight of a bag of dog food is an example of discrete data.

Running times for 500 runners in a 5k race would be a univariate data set.

A Likert scale with an even number of scale points between "Strongly Agree" and "Strongly Disagree"

Ordinal data can be treated as if it were nominal data but not vice versa.

Using a sample to make generalizations about an aspect of a population is called

An advantage of a systematic sample is that no list of enumerated data items is required.

An investment firm rates bonds for AardCo Inc.as "B+," while bonds of Deva Corp.are rated "AA." Which level of measurement would be appropriate for such data?

Which statement is correct?

Which of the following is true?

A random sample is one in which the

By taking a systematic sample,in which we select every 50th shopper arriving at a specific store,we are approximating a random sample of shoppers.

Your weight recorded at your annual physical would not be ratio data,because you cannot have zero weight.

Which of the following is a correct statement?

Overview of Statistics

Describing Data Visually

Descriptive Statistics

Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions and Estimation

One-Sample Hypothesis Tests

Two-Sample Hypothesis Tests

Analysis of Variance

Simple Regression

Multiple Regression

Chi-Square Tests

Filters