Question 1

To summarize the gender of students attending a college in a frequency distribution, a total of at least ______ classes would be required.

Accepted Answer

The answer of To summarize the gender of students attending...

Question 2

The following frequency distribution shows the distribution of delivery times (in days) for swimstuff.com customer orders during the last month.  What is the relative frequency for orders delivered in three days or more?

Accepted Answer

The answer of The following frequency distribution shows the distribution...

Question 3

A data set consists of 40 observations. For a quantitative variable, how many classes would you recommend for the frequency distribution?

Accepted Answer

The answer of A data set consists of 40 observations....

Question 4

Refer to the following breakdown of responses to a survey of "Are you concerned about being tracked while connected to the Internet?"  What type of chart should be used to show relative class frequencies?

Accepted Answer

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

Question 5

The monthly salaries of a sample of 100 employees were rounded to the nearest $10. They ranged from a low of $1,040 to a high of $1,720. If we want to condense the data into seven classes, what is the most convenient class interval?

Accepted Answer

A)  $50 
B)  $100 
C)  $150 
D)  $200

Question 6

A pie chart is similar to a relative frequency distribution.

Accepted Answer

A) True 
 B)False

Question 7

A frequency distribution for qualitative data has class limits.

Accepted Answer

A) True 
 B)False

Question 8

Refer to the following breakdown of responses to a survey of "How confident are you that you saved enough to retire?"  What type of chart should be used to show relative class frequencies?

Accepted Answer

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

Question 9

Refer to the following breakdown of responses to a survey of room service in a hotel.  What is the class with the greatest frequency?

Accepted Answer

A)  Not satisfied 
B)  Satisfied 
C)  Highly satisfied 
D)  None Apply

Question 10

Refer to the following frequency distribution on days absent during a calendar year by employees of a manufacturing company:  How many employees were absent from 6 up to 12 days?

Accepted Answer

A)  20 
B)  8 
C)  12 
D)  17

Question 11

Refer to the following distribution of commissions:  What is the class interval?

Accepted Answer

A)  200 
B)  300 
C)  3,500 
D)  400

Question 12

A data set has 100 observations. In the data, a quantitative variable's highest value is 117 and its lowest value is 47. What is the minimum class interval that you would recommend?

Accepted Answer

The answer of A data set has 100 observations. In...

Question 13

What is the difference between a bar chart and a pie chart?

Accepted Answer

The answer of What is the difference between a bar...

Question 14

Refer to the following distribution of ages:  What is the class interval?

Accepted Answer

A)  9 
B)  10 
C)  10.5 
D)  11

Question 15

In a frequency distribution, a class defined as "Under $100" and "$1,000 and over" is called a(n) ____________.

Accepted Answer

The answer of In a frequency distribution, a class defined...

Question 16

The number of observations in each class of a frequency distribution is called a ________________________.

Accepted Answer

The answer of The number of observations in each class...

Question 17

In a bar chart, why are there spaces between the bars on the horizontal axis?

Accepted Answer

The answer of In a bar chart, why are there...

Question 18

A data set has 200 observations. In the data, a quantitative variable's highest value is 1080 and its lowest value is 960. What is the minimum class interval that you would recommend?

Accepted Answer

The answer of A data set has 200 observations. In...

Question 19

When data is collected using a qualitative, nominal variable (in other words, male or female), what is true about a frequency distribution that summarizes the data?

Accepted Answer

A)  The upper and lower class limits must be calculated. 
B)  Class midpoints can be computed. 
C)  The number of classes corresponds to the number of a variable's values. 
D)  The "2 to the k rule" can be applieD.

Question 20

When data is collected using a qualitative, nominal variable, what is true about a frequency distribution that summarizes the data?

Accepted Answer

A)  The upper and lower class limits must be calculated. 
B)  A pie chart can be used to summarize the data. 
C)  The number of classes is equal to the number of variable's values plus 2. 
D)  The "5 to the k rule" can be applieD.

Exam 2: Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

To summarize the gender of students attending a college in a frequency distribution, a total of at least ______ classes would be required.

The following frequency distribution shows the distribution of delivery times (in days) for swimstuff.com customer orders during the last month. What is the relative frequency for orders delivered in three days or more?

A data set consists of 40 observations. For a quantitative variable, how many classes would you recommend for the frequency distribution?

Refer to the following breakdown of responses to a survey of "Are you concerned about being tracked while connected to the Internet?" What type of chart should be used to show relative class frequencies?

The monthly salaries of a sample of 100 employees were rounded to the nearest $10. They ranged from a low of $1,040 to a high of $1,720. If we want to condense the data into seven classes, what is the most convenient class interval?

A pie chart is similar to a relative frequency distribution.

A frequency distribution for qualitative data has class limits.

Refer to the following breakdown of responses to a survey of "How confident are you that you saved enough to retire?" What type of chart should be used to show relative class frequencies?

Refer to the following breakdown of responses to a survey of room service in a hotel. What is the class with the greatest frequency?

Refer to the following frequency distribution on days absent during a calendar year by employees of a manufacturing company: How many employees were absent from 6 up to 12 days?

Refer to the following distribution of commissions: What is the class interval?