Question 1

When a distribution has more values to the left and tails off to the right, it is skewed negatively.

Accepted Answer

A) True 
 B)False

Question 2

Teachers Ages: The ages (in years) of a sample of 25 teachers are as follows:
  
-Draw a frequency histogram of this data which contains four classes. What is the shape of the histogram?

Accepted Answer

@#IMG-DLM& This histogram of a

Question 3

Observations that are measured at the same time represent what type of data?

Accepted Answer

A)  Time-series data 
B)  Cross-sectional data 
C)  Synchronous data 
D)  None of these choices. 
A)  Time-series data 
B)  Cross-sectional data 
C)  Synchronous data 
D)  None of these choices.

Question 4

The relative frequency of a class in a histogram is computed by

Accepted Answer

A)  dividing the frequency of the class by the number of classes. 
B)  dividing the frequency of the class by the class width. 
C)  dividing the frequency of the class by the total of all frequencies. 
D)  None of these choices. 
A)  dividing the frequency of the class by the number of classes. 
B)  dividing the frequency of the class by the class width. 
C)  dividing the frequency of the class by the total of all frequencies. 
D)  None of these choices.

Question 5

The classification of student major (accounting, economics, management, marketing, other) is an example of a(n)

Accepted Answer

A)  nominal random variable. 
B)  interval random variable. 
C)  continuous random variable. 
D)  parameter. 
A)  nominal random variable. 
B)  interval random variable. 
C)  continuous random variable. 
D)  parameter.

Question 6

You cannot calculate and interpret differences between numbers assigned to nominal data.

Accepted Answer

A) True 
 B)False

Question 7

Compare the two histograms below. Which statement is true?

Accepted Answer

A)  The center of histogram A is lower than the center of histogram B. 
B)  The center of histogram A is higher than the center of histogram B. 
C)  The center of histogram A is the same as the center of histogram B. 
D)  You cannot compare the centers of these two histograms without the original data. 
A)  The center of histogram A is lower than the center of histogram B. 
B)  The center of histogram A is higher than the center of histogram B. 
C)  The center of histogram A is the same as the center of histogram B. 
D)  You cannot compare the centers of these two histograms without the original data.

Question 8

Electronics Company: At a meeting of regional offices managers of a national electronics company, a survey was taken to determine the number of employees the regional managers supervise in the operation of their departments. The results of the survey are shown below.
  
-Across all of the regional offices, how many total employees were supervised by those surveyed?

Accepted Answer

(1 * 7) + (2 * 11) +

Question 9

The intervals (classes) in a histogram do not overlap.

Accepted Answer

A) True 
 B)False

Question 10

Car Buyers: Forty car buyers were asked to indicate which car dealer offered the best overall service. The four choices were Contour Motors (C), Modern Chrysler (M), Tonneau Auto (T), and Uncanny Chevrolet (U). The following data were obtained:
  
-Construct a pie chart of this data. Which car dealer offered the best overall service?

Accepted Answer

@#IMG-DLM& Contour Motors (C)

Question 11

Can a scatter diagram be used to explore the relationship between two nominal variables? Explain why or why not.

Accepted Answer

No; scatter diagrams plot poin

Question 12

Teachers Ages: The ages (in years) of a sample of 25 teachers are as follows:
  
-Draw a frequency histogram of this data which contains six classes. What is the shape of the histogram?

Accepted Answer

@#IMG-DLM& *
This histogram of

Question 13

A frequency distribution lists the categories and the proportion with which each occurs.

Accepted Answer

A) True 
 B)False

Question 14

We determine the approximate width of the classes of a histogram by subtracting the smallest observation from the largest and dividing the answer by the number of ____________________.

Accepted Answer

The answer of We determine the approximate width of the...

Question 15

What are the two most important characteristics to look for in a scatter diagram?

Accepted Answer

The strength and dir

Question 16

Which of the following is true about a stem-and-leaf display?

Accepted Answer

A)  You can recreate the original data set from it. 
B)  Its shape resembles a histogram turned on its side. 
C)  It provides an organized way to depict interval data. 
D)  All of these choices are true. 
A)  You can recreate the original data set from it. 
B)  Its shape resembles a histogram turned on its side. 
C)  It provides an organized way to depict interval data. 
D)  All of these choices are true.

Question 17

The number of observations within each class may be found in a frequency distribution.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following represents a graphical presentation of interval data?

Accepted Answer

A)  A bar chart. 
B)  A histogram. 
C)  A pie chart. 
D)  All of these choices are true. 
A)  A bar chart. 
B)  A histogram. 
C)  A pie chart. 
D)  All of these choices are true.

Question 19

Twenty-five voters participating in a recent election exit poll in Minnesota were asked to state their political party affiliation. Coding the data as R for Republican, D for Democrat, and I for Independent, the data collected were as follows: I, R, D, I, R, I, I, D, R, I, I, D, R, R, I, D, I, R, I, D, I, D, R, R, and I. Construct a frequency bar chart from this data. What does the bar chart tell you about the political affiliations of those in this sample?

Accepted Answer

@#IMG-DLM& The bar graph shows most of t

Question 20

A(n) ____________________ histogram is one with a long tail extending to either the right or the left.

Accepted Answer

The answer of A(n) ____________________ histogram is one with a...

When a distribution has more values to the left and tails off to the right, it is skewed negatively.

Teachers Ages: The ages (in years) of a sample of 25 teachers are as follows: -Draw a frequency histogram of this data which contains four classes. What is the shape of the histogram?

Observations that are measured at the same time represent what type of data?

The relative frequency of a class in a histogram is computed by

The classification of student major (accounting, economics, management, marketing, other) is an example of a(n)

You cannot calculate and interpret differences between numbers assigned to nominal data.

Compare the two histograms below. Which statement is true?

The intervals (classes) in a histogram do not overlap.

Can a scatter diagram be used to explore the relationship between two nominal variables? Explain why or why not.

Teachers Ages: The ages (in years) of a sample of 25 teachers are as follows: -Draw a frequency histogram of this data which contains six classes. What is the shape of the histogram?

A frequency distribution lists the categories and the proportion with which each occurs.

We determine the approximate width of the classes of a histogram by subtracting the smallest observation from the largest and dividing the answer by the number of ____________________.

What are the two most important characteristics to look for in a scatter diagram?

Which of the following is true about a stem-and-leaf display?

The number of observations within each class may be found in a frequency distribution.

Which of the following represents a graphical presentation of interval data?

A(n) ____________________ histogram is one with a long tail extending to either the right or the left.

What Is Statistics

Numerical Descriptive Techniques

Data Collection and Sampling

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 2: Graphical and Tabular Descriptive Techniques

When a distribution has more values to the left and tails off to the right, it is skewed negatively.

Teachers Ages: The ages (in years) of a sample of 25 teachers are as follows: -Draw a frequency histogram of this data which contains four classes. What is the shape of the histogram?

Observations that are measured at the same time represent what type of data?

The relative frequency of a class in a histogram is computed by

The classification of student major (accounting, economics, management, marketing, other) is an example of a(n)

You cannot calculate and interpret differences between numbers assigned to nominal data.

Compare the two histograms below. Which statement is true?

The intervals (classes) in a histogram do not overlap.

Can a scatter diagram be used to explore the relationship between two nominal variables? Explain why or why not.

Teachers Ages: The ages (in years) of a sample of 25 teachers are as follows: -Draw a frequency histogram of this data which contains six classes. What is the shape of the histogram?

A frequency distribution lists the categories and the proportion with which each occurs.

We determine the approximate width of the classes of a histogram by subtracting the smallest observation from the largest and dividing the answer by the number of ____________________.

What are the two most important characteristics to look for in a scatter diagram?

Which of the following is true about a stem-and-leaf display?

The number of observations within each class may be found in a frequency distribution.

Which of the following represents a graphical presentation of interval data?

A(n) ____________________ histogram is one with a long tail extending to either the right or the left.

What Is Statistics

Numerical Descriptive Techniques

Data Collection and Sampling

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