Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

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 3

It is better to attempt a census of a large population instead of relying on a sample.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is not a likely reason for sampling?

Accepted Answer

A) The destructive nature of certain tests 
B) The physical impossibility of checking all the items in the population 
C) Prohibitive cost of studying the entire population 
D) The expense of obtaining random numbers 
A) The destructive nature of certain tests 
B) The physical impossibility of checking all the items in the population 
C) Prohibitive cost of studying the entire population 
D) The expense of obtaining random numbers

Question 5

A stratified sample is sometimes recommended when:

Accepted Answer

A) the sample size is very large. 
B) the population is small compared to the sample. 
C) distinguishable strata can be identified in the populations. 
D) the population is spread out geographically. 
A) the sample size is very large. 
B) the population is small compared to the sample. 
C) distinguishable strata can be identified in the populations. 
D) the population is spread out geographically.

Question 6

The number of words on 50 randomly chosen textbook pages would be cross-sectional data.

Accepted Answer

A) True 
 B)False

Question 7

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

Restroom users are usually in a hurry an

Question 8

Creating a list of people by taking the third name listed on every 10th page of the phone book is an example of convenience sampling.

Accepted Answer

A) True 
 B)False

Question 9

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 10

Categorical data have values that are described by words rather than numbers.

Accepted Answer

A) True 
 B)False

Question 11

To measure satisfaction with its cell phone service, AT&T takes a stratified sample of its customers by age, gender, and location. Which is an advantage of this type of sampling, as opposed to other sampling methods?

Accepted Answer

A) It is less intrusive on customers' privacy. 
B) It does not require random numbers. 
C) It gives faster results. 
D) It can give more accurate results. 
A) It is less intrusive on customers' privacy. 
B) It does not require random numbers. 
C) It gives faster results. 
D) It can give more accurate results.

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

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

It is better to attempt a census of a large population instead of relying on a sample.

Which of the following is not a likely reason for sampling?

A stratified sample is sometimes recommended when:

The number of words on 50 randomly chosen textbook pages would be cross-sectional data.

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?

Creating a list of people by taking the third name listed on every 10^th page of the phone book is an example of convenience sampling.

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?

Categorical data have values that are described by words rather than numbers.

To measure satisfaction with its cell phone service, AT&T takes a stratified sample of its customers by age, gender, and location. Which is an advantage of this type of sampling, as opposed to other sampling methods?

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

Time Series Analysis

Chi-Square Tests

Nonparametric Tests

Quality Management

Filters

Exam 2: Data Collection

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

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

It is better to attempt a census of a large population instead of relying on a sample.

Which of the following is not a likely reason for sampling?

A stratified sample is sometimes recommended when:

The number of words on 50 randomly chosen textbook pages would be cross-sectional data.

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?

Creating a list of people by taking the third name listed on every 10th page of the phone book is an example of convenience sampling.

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?

Categorical data have values that are described by words rather than numbers.

To measure satisfaction with its cell phone service, AT&T takes a stratified sample of its customers by age, gender, and location. Which is an advantage of this type of sampling, as opposed to other sampling methods?

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

Time Series Analysis

Chi-Square Tests

Nonparametric Tests

Quality Management

Filters

Creating a list of people by taking the third name listed on every 10^th page of the phone book is an example of convenience sampling.