Question 1

The sum of the relative frequencies for all classes in a histogram always equals

Accepted Answer

A) the number of classes. 
B) the class width. 
C) the total of all the frequencies. 
D) one. 
A) the number of classes. 
B) the class width. 
C) the total of all the frequencies. 
D) one.

Question 2

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 3

Values must represent ordered rankings for what type of data?

Accepted Answer

A) Interval data 
B) Nominal data 
C) Ordinal data 
D) None of these choices. 
A) Interval data 
B) Nominal data 
C) Ordinal data 
D) None of these choices.

Question 4

A(n)____________________ is a table that sorts data into class intervals (categories)and gives the number of observations in each interval (category).

Accepted Answer

frequency

Question 5

For what type of data are frequencies the only calculations that can be done?

Accepted Answer

A) Interval data 
B) Nominal data 
C) Ordinal data 
D) None of these choices. 
A) Interval data 
B) Nominal data 
C) Ordinal data 
D) None of these choices.

Question 6

With nominal data, there is one and only one way the possible values can be ordered.

Accepted Answer

A) True 
 B)False

Question 7

The number of houses sold in Miami Springs and the average monthly mortgage rates for 18 months randomly selected between January 2011 and April 2013 are shown in the following table. 
   
 a. Draw a scatter diagram with the number of houses sold on the vertical axis. 
 b. Describe the relationship between mortgage rate and number of houses sold.

Accepted Answer

a. @#IMG-DLM& 
 b. There is a strong neg

Question 8

Your gender is a nominal variable.

Accepted Answer

A) True 
 B)False

Question 9

A graph of the frequency distribution for interval data is called a(n)____________________.

Accepted Answer

The answer of A graph of the frequency distribution for...

Question 10

Which of the following situations is best suited for a pie chart?

Accepted Answer

A) The number of dollars spent this year on each type of legal gambling. 
B) The percentage of a charitable donation that goes to administrative costs vs. directly to the charity. 
C) The number of students in your class who received an A, B, C, D, F on their exam. 
D) All of these choices are true. 
A) The number of dollars spent this year on each type of legal gambling. 
B) The percentage of a charitable donation that goes to administrative costs vs. directly to the charity. 
C) The number of students in your class who received an A, B, C, D, F on their exam. 
D) All of these choices are true.

Question 11

Your final grade in a course (A, B, C, D, E)is a nominal variable.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is the method statisticians use to draw the best fitting straight line through the data on a scatter diagram?

Accepted Answer

A) The fit best method. 
B) The least squares method. 
C) The point-intercept method. 
D) None of these choices. 
A) The fit best method. 
B) The least squares method. 
C) The point-intercept method. 
D) None of these choices.

Question 13

Business School Graduates A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution.   {Business School Graduates Narrative} Draw a pie chart of this data. Are you able to reconstruct the original data from this pie chart alone?

Accepted Answer

@#IMG-DLM& No; you cannot reconstruct th

Question 14

Which of the following describes the shape of the histogram below?

Accepted Answer

A) Positively skewed 
B) Negatively skewed 
C) Symmetric 
D) None of these choices 
A) Positively skewed 
B) Negatively skewed 
C) Symmetric 
D) None of these choices

Question 15

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 16

Teachers Ages The ages (in years)of a sample of 25 teachers are as follows:   {Teachers Ages Narrative} 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 17

The more observations we have, the ____________________ the number of class intervals we need to use to draw a useful histogram.

Accepted Answer

The answer of The more observations we have, the ____________________...

Question 18

Internet Classes A survey of 25 students was conducted to determine how they rate the quality of Internet classes. Students were asked to rate the overall quality from 0 (no quality at all)to 100 (extremely good quality). The stem-and-leaf display of the data is shown below.   {Internet Classes Narrative} What percentage of the students rated the overall quality of on-line classes as being between 50 and 75, inclusive?

Accepted Answer

The answer of Internet Classes A survey of 25 students...

Question 19

The original observations cannot be determined once they are grouped into a frequency distribution.

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

A) True 
 B)False

The sum of the relative frequencies for all classes in a histogram always equals

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

Values must represent ordered rankings for what type of data?

A(n)____________________ is a table that sorts data into class intervals (categories)and gives the number of observations in each interval (category).

For what type of data are frequencies the only calculations that can be done?

With nominal data, there is one and only one way the possible values can be ordered.

Your gender is a nominal variable.

A graph of the frequency distribution for interval data is called a(n)____________________.

Which of the following situations is best suited for a pie chart?

Your final grade in a course (A, B, C, D, E)is a nominal variable.

Which of the following is the method statisticians use to draw the best fitting straight line through the data on a scatter diagram?

Which of the following describes the shape of the histogram below?

Compare the two histograms below. Which statement is true?

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

The more observations we have, the ____________________ the number of class intervals we need to use to draw a useful histogram.

The original observations cannot be determined once they are grouped into a frequency distribution.

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

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 Populat

Inference About Comparing Two Populat

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlat

Multiple Regression

Review of Statistical Inference

Filters

Exam 2: Graphical and Tabular Descriptive Techniques

The sum of the relative frequencies for all classes in a histogram always equals

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

Values must represent ordered rankings for what type of data?

A(n)____________________ is a table that sorts data into class intervals (categories)and gives the number of observations in each interval (category).

For what type of data are frequencies the only calculations that can be done?

With nominal data, there is one and only one way the possible values can be ordered.

Your gender is a nominal variable.

A graph of the frequency distribution for interval data is called a(n)____________________.

Which of the following situations is best suited for a pie chart?

Your final grade in a course (A, B, C, D, E)is a nominal variable.

Which of the following is the method statisticians use to draw the best fitting straight line through the data on a scatter diagram?

Which of the following describes the shape of the histogram below?

Compare the two histograms below. Which statement is true?

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

The more observations we have, the ____________________ the number of class intervals we need to use to draw a useful histogram.

The original observations cannot be determined once they are grouped into a frequency distribution.

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

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 Populat

Inference About Comparing Two Populat

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlat

Multiple Regression

Review of Statistical Inference

Filters