Question 1

The most common graphical presentation of quantitative data is a

Accepted Answer

A) histogram 
B) bar chart 
C) relative frequency 
D) pie chart 
A) histogram 
B) bar chart 
C) relative frequency 
D) pie chart

Question 2

Exhibit 2-3
Michael's Compute-All, a national computer retailer, has kept a record of the number of laptop computers they have sold for a period of 80 days. Their sales records are shown below:
Number of Laptops Sold Number of Days
0 - 19 5
20 - 39 15
40 - 59 30
60 - 79 20
80 - 99 10
Total 80
-Refer to Exhibit 2-3. The number of days in which the company sold less than 60 laptops is

Accepted Answer

A) 20 
B) 30 
C) 50 
D) 60 
A) 20 
B) 30 
C) 50 
D) 60

Question 3

You are given the following data on the ages of employees at a company. Construct a stem-and-leaf display.

Accepted Answer

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

Question 4

The percent frequency of a class is computed by

Accepted Answer

A) multiplying the relative frequency by 10 
B) dividing the relative frequency by 100 
C) multiplying the relative frequency by 100 
D) adding 100 to the relative frequency 
A) multiplying the relative frequency by 10 
B) dividing the relative frequency by 100 
C) multiplying the relative frequency by 100 
D) adding 100 to the relative frequency

Question 5

A histogram is said to be skewed to the left if it has a

Accepted Answer

A) longer tail to the right 
B) shorter tail to the right 
C) shorter tail to the left 
D) longer tail to the left 
A) longer tail to the right 
B) shorter tail to the right 
C) shorter tail to the left 
D) longer tail to the left

Question 6

A researcher is gathering data from four geographical areas designated: South = 1; North = 2; East = 3; West = 4. The designated geographical regions represent

Accepted Answer

A) categorical data 
B) quantitative data 
C) label data 
D) either quantitative or categorical data 
A) categorical data 
B) quantitative data 
C) label data 
D) either quantitative or categorical data

Question 7

Exhibit 2-1
The numbers of hours worked (per week) by 400 statistics students are shown below.
  
-Refer to Exhibit 2-1. The class width for this distribution

Accepted Answer

A) is 9 
B) is 10 
C) is 39, which is: the largest value minus the smallest value or 39 - 0 = 39 
D) varies from class to class 
A) is 9 
B) is 10 
C) is 39, which is: the largest value minus the smallest value or 39 - 0 = 39 
D) varies from class to class

Question 8

Data that provide labels or names for categories of like items are known as

Accepted Answer

A) categorical data 
B) quantitative data 
C) label data 
D) category data 
A) categorical data 
B) quantitative data 
C) label data 
D) category data

Question 9

Exhibit 2-1
The numbers of hours worked (per week) by 400 statistics students are shown below.
  
-Refer to Exhibit 2-1. If a cumulative frequency distribution is developed for the above data, the last class will have a cumulative frequency of

Accepted Answer

A) 100 
B) 1 
C) 30 - 39 
D) 400 
A) 100 
B) 1 
C) 30 - 39 
D) 400

Question 10

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

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 11

Exhibit 2-1
The numbers of hours worked (per week) by 400 statistics students are shown below.
  
-Refer to Exhibit 2-1. The percentage of students who work at least 10 hours per week is

Accepted Answer

A) 50% 
B) 5% 
C) 95% 
D) 100% 
A) 50% 
B) 5% 
C) 95% 
D) 100%

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 number of students who work 19 hours or less is

Accepted Answer

A) 80 
B) 100 
C) 200 
D) 400 
A) 80 
B) 100 
C) 200 
D) 400

Question 13

A survey of 400 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school.
   
a.Are a majority of the seniors in the survey planning to attend graduate school?
b.Which discipline constitutes the majority of the individuals in the survey?
c.Compute row percentages and comment on the relationship between the students' undergraduate major and their intention of attending graduate school.
d.Compute the column percentages and comment on the relationship between the students' intention of going to graduate school and their undergraduate major.

Accepted Answer

a.No, majority (260) will not attend gra

Question 14

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

Accepted Answer

A) is 200 
B) is 300 
C) is 0.75 
D) is 0.5 
A) is 200 
B) is 300 
C) is 0.75 
D) is 0.5

Question 15

Exhibit 2-3
Michael's Compute-All, a national computer retailer, has kept a record of the number of laptop computers they have sold for a period of 80 days. Their sales records are shown below:
Number of Laptops Sold Number of Days
0 - 19 5
20 - 39 15
40 - 59 30
60 - 79 20
80 - 99 10
Total 80
-Refer to Exhibit 2-3. If one develops a cumulative frequency distribution for the above data, the last class will have a frequency of

Accepted Answer

A) 10 
B) 100 
C) 0 to 100 
D) 80 
A) 10 
B) 100 
C) 0 to 100 
D) 80

Question 16

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 17

Exhibit 2-2
A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school.
  
-Refer to Exhibit 2-2. Of those students who are majoring in business, what percentage plans to go to graduate school?

Accepted Answer

A) 27.78 
B) 8.75 
C) 70 
D) 72.22 
A) 27.78 
B) 8.75 
C) 70 
D) 72.22

Question 18

The sum of the relative frequencies for all classes will always equal

Accepted Answer

A) the sample size 
B) the number of classes 
C) one 
D) any value larger than one 
A) the sample size 
B) the number of classes 
C) one 
D) any value larger than one

Question 19

The total number of data items with a value less than the upper limit for the class is given by the

Accepted Answer

A) frequency distribution 
B) relative frequency distribution 
C) cumulative frequency distribution 
D) cumulative relative frequency distribution 
A) frequency distribution 
B) relative frequency distribution 
C) cumulative frequency distribution 
D) cumulative relative frequency distribution

Question 20

In a scatter diagram, a line that provides an approximation of the relationship between the variables is known as

Accepted Answer

A) approximation line 
B) trend line 
C) line of zero intercept 
D) line of zero slope 
A) approximation line 
B) trend line 
C) line of zero intercept 
D) line of zero slope

The most common graphical presentation of quantitative data is a

You are given the following data on the ages of employees at a company. Construct a stem-and-leaf display.

The percent frequency of a class is computed by

A histogram is said to be skewed to the left if it has a

A researcher is gathering data from four geographical areas designated: South = 1; North = 2; East = 3; West = 4. The designated geographical regions represent

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The class width for this distribution

Data that provide labels or names for categories of like items are known as

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. If a cumulative frequency distribution is developed for the above data, the last class will have a cumulative frequency of

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

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The percentage of students who work at least 10 hours per week is

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 who work 19 hours or less is

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

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 A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. -Refer to Exhibit 2-2. Of those students who are majoring in business, what percentage plans to go to graduate school?

The sum of the relative frequencies for all classes will always equal

The total number of data items with a value less than the upper limit for the class is given by the

In a scatter diagram, a line that provides an approximation of the relationship between the variables is known as

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

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Exam 2: Descriptive Statistics: Tabular and Graphical Presentations

The most common graphical presentation of quantitative data is a

You are given the following data on the ages of employees at a company. Construct a stem-and-leaf display.

The percent frequency of a class is computed by

A histogram is said to be skewed to the left if it has a

A researcher is gathering data from four geographical areas designated: South = 1; North = 2; East = 3; West = 4. The designated geographical regions represent

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The class width for this distribution

Data that provide labels or names for categories of like items are known as

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. If a cumulative frequency distribution is developed for the above data, the last class will have a cumulative frequency of

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

Exhibit 2-1 The numbers of hours worked (per week) by 400 statistics students are shown below. -Refer to Exhibit 2-1. The percentage of students who work at least 10 hours per week is

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 who work 19 hours or less is

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

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 A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. -Refer to Exhibit 2-2. Of those students who are majoring in business, what percentage plans to go to graduate school?

The sum of the relative frequencies for all classes will always equal

The total number of data items with a value less than the upper limit for the class is given by the

In a scatter diagram, a line that provides an approximation of the relationship between the variables is known as

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

Filters