Question 1

Methods that use simple arithmetic and easy-to-draw graphs to summarize data quickly are called

Accepted Answer

A) exploratory data analysis 
B) relative frequency distributions 
C) bar charts 
D) pie charts 
A) exploratory data analysis 
B) relative frequency distributions 
C) bar charts 
D) pie charts

Question 2

Exhibit 2-1
The numbers of hours worked (per week) by 400 statistics students are shown below.
  
-Refer to Exhibit 2-1. The cumulative frequency for the class of 20 F1F1F1S1F1F1F10 29

Accepted Answer

A) is 200 
B) is 300 
C) is 0.75 
D) is 0.50 
A) is 200 
B) is 300 
C) is 0.75 
D) is 0.50

Question 3

Construct a stem-and-leaf display for the following data. Specify the leaf unit for the display.

Accepted Answer

The answer of Construct a stem-and-leaf display for the following...

Question 4

You are given the following data on the earnings per share for ten companies. Construct a stem-and-leaf display. Specify the leaf unit for the display.

Accepted Answer

The answer of You are given the following data on...

Question 5

It is time for Roger Hall, manager of new car sales at the Maxwell Ford dealership, to submit his order for new Mustang coupes. These cars will be parked in the lot, available for immediate sale to buyers who are not special-ordering a car. Roger must decide how many Mustangs of each color he should order. The new color options are very similar to the past year's options.
Roger believes the colors chosen by customers who special-order their cars best reflect most customers' true color preferences. He has taken a random sample of 40 special orders for Mustang coupes placed in the past year. The color preferences found in the sample are listed below.
   
a. Prepare a frequency distribution, relative frequency distribution, and percent frequency distribution for the data set.
b. Construct a bar chart showing the frequency distribution of the car colors.
c. Construct a pie chart showing the percent frequency distribution of the car colors.

Accepted Answer

The answer of It is time for Roger Hall, manager...

Question 6

For stem-and-leaf displays where the leaf unit is not stated, the leaf unit is assumed to equal

Accepted Answer

A) 0 
B) .1 
C) 1 
D) 10 
A) 0 
B) .1 
C) 1 
D) 10

Question 7

A graphical presentation of the relationship between two quantitative variables is

Accepted Answer

A) a pie chart 
B) a histogram 
C) a crosstabulation 
D) a scatter diagram 
A) a pie chart 
B) a histogram 
C) a crosstabulation 
D) a scatter diagram

Question 8

Exhibit 2-1
The numbers of hours worked (per week) by 400 statistics students are shown below.
  
-Refer to Exhibit 2-1. The relative frequency of students working 9 hours or less

Accepted Answer

A) is 20 
B) is 100 
C) is 0.95 
D) 0.05 
A) is 20 
B) is 100 
C) is 0.95 
D) 0.05

Question 9

Excel's Chart Tools can be used to construct a

Accepted Answer

A) bar chart 
B) pie chart 
C) histogram 
D) All of these can be constructed using Excel's Chart Tools. 
A) bar chart 
B) pie chart 
C) histogram 
D) All of these can be constructed using Excel's Chart Tools.

Question 10

For the following observations, plot a scatter diagram and indicate what kind of relationship (if any) exist between x and y.

Accepted Answer

A positive relations

Question 11

The difference between the lower class limits of adjacent classes provides the

Accepted Answer

A) number of classes 
B) class limits 
C) class midpoint 
D) class width 
A) number of classes 
B) class limits 
C) class midpoint 
D) class width

Question 12

Exhibit 2-1
The numbers of hours worked (per week) by 400 statistics students are shown below.
  
-Refer to Exhibit 2-1. The cumulative relative frequency for the class of 20 F1F1F1S1F1F1F10 29

Accepted Answer

A) is 300 
B) is 0.25 
C) is 0.75 
D) is 0.5 
A) is 300 
B) is 0.25 
C) is 0.75 
D) is 0.5

Question 13

Before drawing any conclusions about the relationship between two variables shown in a crosstabulation, you should

Accepted Answer

A) investigate whether any hidden variables could affect the conclusions 
B) construct a scatter diagram and find the trendline 
C) develop a relative frequency distribution 
D) construct an ogive for each of the variables 
A) investigate whether any hidden variables could affect the conclusions 
B) construct a scatter diagram and find the trendline 
C) develop a relative frequency distribution 
D) construct an ogive for each of the variables

Question 14

The sum of frequencies for all classes will always equal

Accepted Answer

A) 1 
B) the number of elements in a data set 
C) the number of classes 
D) a value between 0 and 1 
A) 1 
B) the number of elements in a data set 
C) the number of classes 
D) a value between 0 and 1

Question 15

Exhibit 2-1
The numbers of hours worked (per week) by 400 statistics students are shown below.
  
-Refer to Exhibit 2-1. The number of students working 19 hours or less

Accepted Answer

A) is 80 
B) is 100 
C) is 180 
D) is 300 
A) is 80 
B) is 100 
C) is 180 
D) is 300

Question 16

Exhibit 2-2
Information on the type of industry is provided for a sample of 50 Fortune 500 companies.
  
-Refer to Exhibit 2-2. The percent frequency of industries that are classified as electronics is

Accepted Answer

A) 10 
B) 20 
C) 0.10 
D) 0.20 
A) 10 
B) 20 
C) 0.10 
D) 0.20

Question 17

A graphical device for presenting categorical data summaries based on subdivision of a circle into sectors that correspond to the relative frequency for each class is a

Accepted Answer

A) histogram 
B) stem-and-leaf display 
C) pie chart 
D) bar chart 
A) histogram 
B) stem-and-leaf display 
C) pie chart 
D) bar chart

Question 18

Exhibit 2-3
The number of sick days taken (per month) by 200 factory workers is summarized below.
  
-Refer to Exhibit 2-3. The midpoint of the first class is

Accepted Answer

A) 10 
B) 2 
C) 2.5 
D) 3 
A) 10 
B) 2 
C) 2.5 
D) 3

Question 19

In a stem-and-leaf display,

Accepted Answer

A) a single digit is used to define each stem, and a single digit is used to define each leaf 
B) a single digit is used to define each stem, and one or more digits are used to define each leaf 
C) one or more digits are used to define each stem, and a single digit is used to define each leaf 
D) one or more digits are used to define each stem, and one or more digits are used to define each leaf 
A) a single digit is used to define each stem, and a single digit is used to define each leaf 
B) a single digit is used to define each stem, and one or more digits are used to define each leaf 
C) one or more digits are used to define each stem, and a single digit is used to define each leaf 
D) one or more digits are used to define each stem, and one or more digits are used to define each leaf

Question 20

Excel's __________ can be used to construct a frequency distribution for categorical data.

Accepted Answer

A) DISTRIBUTION function 
B) SUM function 
C) FREQUENCY function 
D) COUNTIF function 
A) DISTRIBUTION function 
B) SUM function 
C) FREQUENCY function 
D) COUNTIF function

Methods that use simple arithmetic and easy-to-draw graphs to summarize data quickly are called

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The cumulative frequency for the class of 20  29

Construct a stem-and-leaf display for the following data. Specify the leaf unit for the display.

You are given the following data on the earnings per share for ten companies. Construct a stem-and-leaf display. Specify the leaf unit for the display.

For stem-and-leaf displays where the leaf unit is not stated, the leaf unit is assumed to equal

A graphical presentation of the relationship between two quantitative variables is

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The relative frequency of students working 9 hours or less

Excel's Chart Tools can be used to construct a

For the following observations, plot a scatter diagram and indicate what kind of relationship (if any) exist between x and y.

The difference between the lower class limits of adjacent classes provides the

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The cumulative relative frequency for the class of 20  29

Before drawing any conclusions about the relationship between two variables shown in a crosstabulation, you should

The sum of frequencies for all classes will always equal

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The number of students working 19 hours or less

Exhibit 2-2 Information on the type of industry is provided for a sample of 50 Fortune 500 companies. -Refer to Exhibit 2-2. The percent frequency of industries that are classified as electronics is

A graphical device for presenting categorical data summaries based on subdivision of a circle into sectors that correspond to the relative frequency for each class is a

Exhibit 2-3 The number of sick days taken (per month) by 200 factory workers is summarized below. -Refer to Exhibit 2-3. The midpoint of the first class is

In a stem-and-leaf display,

Excel's __________ can be used to construct a frequency distribution for categorical data.

Data and Statistics

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Comparisons Involving Means, Experimental Design, and Analysis of Variance

Comparisons Involving Proportions and a Test of Independence

Simple Linear Regression

Multiple Regression

Statistical Methods for Quality Control

Time Series Analysis and Forecastng

Filters

Exam 2: Descriptive Statistics: Tabular and Graphical Presentations

Methods that use simple arithmetic and easy-to-draw graphs to summarize data quickly are called

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The cumulative frequency for the class of 20  29

Construct a stem-and-leaf display for the following data. Specify the leaf unit for the display.

You are given the following data on the earnings per share for ten companies. Construct a stem-and-leaf display. Specify the leaf unit for the display.

For stem-and-leaf displays where the leaf unit is not stated, the leaf unit is assumed to equal

A graphical presentation of the relationship between two quantitative variables is

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The relative frequency of students working 9 hours or less

Excel's Chart Tools can be used to construct a

For the following observations, plot a scatter diagram and indicate what kind of relationship (if any) exist between x and y.

The difference between the lower class limits of adjacent classes provides the

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The cumulative relative frequency for the class of 20  29

Before drawing any conclusions about the relationship between two variables shown in a crosstabulation, you should

The sum of frequencies for all classes will always equal

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The number of students working 19 hours or less

Exhibit 2-2 Information on the type of industry is provided for a sample of 50 Fortune 500 companies. -Refer to Exhibit 2-2. The percent frequency of industries that are classified as electronics is

A graphical device for presenting categorical data summaries based on subdivision of a circle into sectors that correspond to the relative frequency for each class is a

Exhibit 2-3 The number of sick days taken (per month) by 200 factory workers is summarized below. -Refer to Exhibit 2-3. The midpoint of the first class is

In a stem-and-leaf display,

Excel's __________ can be used to construct a frequency distribution for categorical data.

Data and Statistics

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Comparisons Involving Means, Experimental Design, and Analysis of Variance

Comparisons Involving Proportions and a Test of Independence

Simple Linear Regression

Multiple Regression

Statistical Methods for Quality Control

Time Series Analysis and Forecastng

Filters