Question 1

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 C

Question 2

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

Accepted Answer

A) True 
 B)False  True

Question 3

What does the interquartile range describe?

Accepted Answer

A) The range of the lower 50% of the observations 
B) The range of the middle 50% of the observations 
C) The range of the upper 50% of the observations 
D) The ranges of the lower 25% and the upper 25% of the observations 
A) The range of the lower 50% of the observations 
B) The range of the middle 50% of the observations 
C) The range of the upper 50% of the observations 
D) The ranges of the lower 25% and the upper 25% of the observations B

Question 4

A scatter diagram of sales versus production is labeled with sales on the Y-axis and production on the X-axis.

Accepted Answer

A) True 
 B)False

Question 5

A scatter diagram is used to illustrate a relationship between gender and the preference for Coke or Pepsi.

Accepted Answer

A) True 
 B)False

Question 6

A dot plot is useful for quickly graphing frequencies in a small data set.

Accepted Answer

A) True 
 B)False

Question 7

The range of the coefficient of skewness is ________.

Accepted Answer

A) values greater than or equal to zero or always positive 
B) values less than or equal to zero or always negative 
C) both positive and negative values 
D) values between −1 and +1 
A) values greater than or equal to zero or always positive 
B) values less than or equal to zero or always negative 
C) both positive and negative values 
D) values between −1 and +1

Question 8

A dot plot is best applied when ________.

Accepted Answer

A) the mean,median,and mode are equal 
B) the general shape of a distribution is symmetric 
C) the relationship between two variables is summarized 
D) a single variable is summarized 
A) the mean,median,and mode are equal 
B) the general shape of a distribution is symmetric 
C) the relationship between two variables is summarized 
D) a single variable is summarized

Question 9

To locate the percentile for a given observation in a data set,the data must be ________.

Accepted Answer

A) sorted and listed from the minimum to the maximum values 
B) displayed in a histogram 
C) summarized in a frequency distribution 
D) distributed symmetrically around the mean 
A) sorted and listed from the minimum to the maximum values 
B) displayed in a histogram 
C) summarized in a frequency distribution 
D) distributed symmetrically around the mean

Question 10

The following graph is a ________.

Accepted Answer

A) dot plot 
B) stem-and-leaf display 
C) box plot 
D) scatter diagram 
A) dot plot 
B) stem-and-leaf display 
C) box plot 
D) scatter diagram

Question 11

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

Question 12

A box plot graphically shows the 10th and 90th percentiles.

Accepted Answer

A) True 
 B)False

Question 13

If the coefficient of skewness is equal to zero,the shape of the distribution is ________.

Accepted Answer

A) negatively skewed 
B) symmetric 
C) positively skewed 
D) unknown 
A) negatively skewed 
B) symmetric 
C) positively skewed 
D) unknown

Question 14

Quartiles divide a distribution into ________.

Accepted Answer

A) 2 equal parts 
B) 4 equal parts 
C) 10 equal parts 
D) 100 equal parts 
A) 2 equal parts 
B) 4 equal parts 
C) 10 equal parts 
D) 100 equal parts

Question 15

Using the following statistics to describe a distribution of data,what is the interquartile range? 
Minimum = 10
Q1 = 25
Median = 50
Q3 = 75
Maximum = 95

Accepted Answer

A) 85 
B) 50 
C) 15 
D) 20 
A) 85 
B) 50 
C) 15 
D) 20

Question 16

A contingency table would be used to summarize data such as ________.

Accepted Answer

A) company employees by gender and organizational title 
B) company employees by gender and age 
C) company employees by compensation and age 
D) company employees by compensation and years with the company 
A) company employees by gender and organizational title 
B) company employees by gender and age 
C) company employees by compensation and age 
D) company employees by compensation and years with the company

Question 17

A stem-and-leaf diagram shows the actual data values.

Accepted Answer

A) True 
 B)False

Question 18

Outliers are clearly 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

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

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

A) True 
 B)False

The interquartile range is graphically presented in a ________.

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

What does the interquartile range describe?

A scatter diagram of sales versus production is labeled with sales on the Y-axis and production on the X-axis.

A scatter diagram is used to illustrate a relationship between gender and the preference for Coke or Pepsi.

A dot plot is useful for quickly graphing frequencies in a small data set.

The range of the coefficient of skewness is ________.

A dot plot is best applied when ________.

To locate the percentile for a given observation in a data set,the data must be ________.

The following graph is a ________.

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 ________.

A box plot graphically shows the 10th and 90th percentiles.

If the coefficient of skewness is equal to zero,the shape of the distribution is ________.

Quartiles divide a distribution into ________.

Using the following statistics to describe a distribution of data,what is the interquartile range? Minimum = 10 Q1 = 25 Median = 50 Q3 = 75 Maximum = 95

A contingency table would be used to summarize data such as ________.

A stem-and-leaf diagram shows the actual data values.

Outliers are clearly presented in a ________.

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

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

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

Nonparametric Methods: Nominal Level Hypothesis Tests

Nonparametric Methods: Analysis of Ordinal Data

Index Numbers

Time Series and Forecasting

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 4: Describing Data: Displaying and Exploring Data

The interquartile range is graphically presented in a ________.

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

What does the interquartile range describe?

A scatter diagram of sales versus production is labeled with sales on the Y-axis and production on the X-axis.

A scatter diagram is used to illustrate a relationship between gender and the preference for Coke or Pepsi.

A dot plot is useful for quickly graphing frequencies in a small data set.

The range of the coefficient of skewness is ________.

A dot plot is best applied when ________.

To locate the percentile for a given observation in a data set,the data must be ________.

The following graph is a ________.

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 ________.

A box plot graphically shows the 10th and 90th percentiles.

If the coefficient of skewness is equal to zero,the shape of the distribution is ________.

Quartiles divide a distribution into ________.

Using the following statistics to describe a distribution of data,what is the interquartile range? Minimum = 10 Q1 = 25 Median = 50 Q3 = 75 Maximum = 95

A contingency table would be used to summarize data such as ________.

A stem-and-leaf diagram shows the actual data values.

Outliers are clearly presented in a ________.

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

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

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

Nonparametric Methods: Nominal Level Hypothesis Tests

Nonparametric Methods: Analysis of Ordinal Data

Index Numbers

Time Series and Forecasting

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters