Question 1

Quartiles divide a distribution into ten equal parts.

Accepted Answer

A) True 
 B)False  False

Question 2

If a student places in the 99th percentile on an exam, she performed better than 99% of all students who completed the exam. Her performance is similar to a statement based on a

Accepted Answer

A)  Frequency table. 
B)  Cumulative frequency distribution. 
C)  Histogram. 
D)  Pie chart. 
A)  Frequency table. 
B)  Cumulative frequency distribution. 
C)  Histogram. 
D)  Pie chart. B

Question 3

If a distribution is negatively skewed, the distribution is not symmetrical and the long tail is to the left.

Accepted Answer

A) True 
 B)False  True

Question 4

In a stem-and-leaf display, the leaf represents the members of a class in a frequency distribution.

Accepted Answer

A) True 
 B)False

Question 5

The coefficient of skewness is a measure of ____________ symmetry.

Accepted Answer

The answer of The coefficient of skewness is a measure...

Question 6

A dot plot shows the

Accepted Answer

A)  The general shape of a distribution. 
B)  The mean, median, and mode. 
C)  The relationship between two variables. 
D)  The interquartile range. 
A)  The general shape of a distribution. 
B)  The mean, median, and mode. 
C)  The relationship between two variables. 
D)  The interquartile range.

Question 7

For the following data, what relationship is shown in the graph?

Accepted Answer

A positive

Question 8

Percentiles divide a distribution into one hundred equal parts.

Accepted Answer

A) True 
 B)False

Question 9

The following graph is a

Accepted Answer

A)  Dot plot 
B)  Stem-and-leaf display 
C)  Box plot 
D)  Contingency table 
A)  Dot plot 
B)  Stem-and-leaf display 
C)  Box plot 
D)  Contingency table

Question 10

A relationship between two nominal variables is summarized by a contingency table.

Accepted Answer

A) True 
 B)False

Question 11

In a symmetric distribution, is the 99th percentile located in the right or left tail? _______________

Accepted Answer

Question 12

A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the following sales for the last 20 hours.   What is the first quartile for the distribution of number of sales per hour? ________________

Accepted Answer

Q1 = 4 sal

Question 13

A dot plot is useful for showing the range of the data.

Accepted Answer

A) True 
 B)False

Question 14

Draw a negatively or positively skewed distribution and show the relative locations of the mean, median, and mode.

Accepted Answer

The answer of Draw a negatively or positively skewed distribution...

Question 15

The coefficient of skewness is

Accepted Answer

A)  Always positive or greater than or equal to zero. 
B)  Always negative or less than or equal to zero. 
C)  Positive, negative, or zero. 
D)  Unknown. 
A)  Always positive or greater than or equal to zero. 
B)  Always negative or less than or equal to zero. 
C)  Positive, negative, or zero. 
D)  Unknown.

Question 16

The following is an example of ____________________________

Accepted Answer

The answer of The following is an example of ____________________________...

Question 17

A large oil company is studying the number of gallons of gasoline purchased per customer at self-service pumps. The mean number of gallons is 10.0 with a standard deviation of 3.0 gallons. The median is 10.75 gallons. What is the Pearson's coefficient of skewness?

Accepted Answer

A)  -1.00 
B)  -0.75 
C)  +0.75 
D)  +1.00 
A)  -1.00 
B)  -0.75 
C)  +0.75 
D)  +1.00

Question 18

The interquartile range is graphically presented in a

Accepted Answer

A)  Dot plot. 
B)  Stem-and-leaf display. 
C)  Box plot. 
D)  Contingency table. 
A)  Dot plot. 
B)  Stem-and-leaf display. 
C)  Box plot. 
D)  Contingency table.

Question 19

What chart or graph uses several rows of data to show a frequency distribution? _______________

Accepted Answer

Stem-and-l

Question 20

The test scores for a class of 147 students are computed. What is the location of the test score associated with the third quartile?

Accepted Answer

A)  111 
B)  37 
C)  74 
D)  75% 
A)  111 
B)  37 
C)  74 
D)  75%

Quartiles divide a distribution into ten equal parts.

If a student places in the 99^th percentile on an exam, she performed better than 99% of all students who completed the exam. Her performance is similar to a statement based on a

If a distribution is negatively skewed, the distribution is not symmetrical and the long tail is to the left.

In a stem-and-leaf display, the leaf represents the members of a class in a frequency distribution.

The coefficient of skewness is a measure of ____________ symmetry.

A dot plot shows the

For the following data, what relationship is shown in the graph?

Percentiles divide a distribution into one hundred equal parts.

The following graph is a

A relationship between two nominal variables is summarized by a contingency table.

In a symmetric distribution, is the 99^th percentile located in the right or left tail? _______________

A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the following sales for the last 20 hours. What is the first quartile for the distribution of number of sales per hour? ________________

A dot plot is useful for showing the range of the data.

Draw a negatively or positively skewed distribution and show the relative locations of the mean, median, and mode.

The coefficient of skewness is

The following is an example of ____________________________

A large oil company is studying the number of gallons of gasoline purchased per customer at self-service pumps. The mean number of gallons is 10.0 with a standard deviation of 3.0 gallons. The median is 10.75 gallons. What is the Pearson's coefficient of skewness?

The interquartile range is graphically presented in a

What chart or graph uses several rows of data to show a frequency distribution? _______________

The test scores for a class of 147 students are computed. What is the location of the test score associated with the third quartile?

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Goodness-Of-Fit Tests

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 4: Describing Data: Displaying and Exploring Data

Quartiles divide a distribution into ten equal parts.

If a student places in the 99th percentile on an exam, she performed better than 99% of all students who completed the exam. Her performance is similar to a statement based on a

If a distribution is negatively skewed, the distribution is not symmetrical and the long tail is to the left.

In a stem-and-leaf display, the leaf represents the members of a class in a frequency distribution.

The coefficient of skewness is a measure of ____________ symmetry.

A dot plot shows the

For the following data, what relationship is shown in the graph?

Percentiles divide a distribution into one hundred equal parts.

The following graph is a

A relationship between two nominal variables is summarized by a contingency table.

In a symmetric distribution, is the 99th percentile located in the right or left tail? _______________

A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the following sales for the last 20 hours. What is the first quartile for the distribution of number of sales per hour? ________________

A dot plot is useful for showing the range of the data.

Draw a negatively or positively skewed distribution and show the relative locations of the mean, median, and mode.

The coefficient of skewness is

The following is an example of ____________________________

A large oil company is studying the number of gallons of gasoline purchased per customer at self-service pumps. The mean number of gallons is 10.0 with a standard deviation of 3.0 gallons. The median is 10.75 gallons. What is the Pearson's coefficient of skewness?

The interquartile range is graphically presented in a

What chart or graph uses several rows of data to show a frequency distribution? _______________

The test scores for a class of 147 students are computed. What is the location of the test score associated with the third quartile?

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Goodness-Of-Fit Tests

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

If a student places in the 99^th percentile on an exam, she performed better than 99% of all students who completed the exam. Her performance is similar to a statement based on a

In a symmetric distribution, is the 99^th percentile located in the right or left tail? _______________