Question 1

A pie chart shows the number of observations in each class.

Accepted Answer

A) True 
 B)False  False

Question 2

When a class interval is expressed as: 100 up to 200,

Accepted Answer

A) Observations with values of 100 are excluded from the class frequency. 
B) Observations with values of 200 are included in the class frequency. 
C) Observations with values of 200 are excluded from the class frequency. 
D) The class interval is 99. 
A) Observations with values of 100 are excluded from the class frequency. 
B) Observations with values of 200 are included in the class frequency. 
C) Observations with values of 200 are excluded from the class frequency. 
D) The class interval is 99. C

Question 3

To convert a frequency distribution to a relative frequency distribution,divide each class frequency by the number of classes.

Accepted Answer

A) True 
 B)False  False

Question 4

In constructing a frequency polygon,class frequencies are scaled on which axis? ______

Accepted Answer

The answer of In constructing a frequency polygon,class frequencies are...

Question 5

A frequency polygon is a very useful graphic technique when comparing two or more distributions.

Accepted Answer

A) True 
 B)False

Question 6

Refer to the following frequency distribution on days absent during a calendar year by employees of a manufacturing company:   How many employees were absent between 3 up to 6 days?

Accepted Answer

A) 31 
B) 29 
C) 14 
D) 2 
A) 31 
B) 29 
C) 14 
D) 2

Question 7

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

Accepted Answer

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

Question 8

A student was interested in the cigarette smoking habits of college students and collected data from an unbiased random sample of students.The data is summarized in the following table:   Why is the table NOT a frequency distribution?

Accepted Answer

A) The number of males does not equal the sum of males that smoke and do not smoke. 
B) The classes are not mutually exclusive. 
C) There are too many classes. 
D) Class limits cannot be computed. 
A) The number of males does not equal the sum of males that smoke and do not smoke. 
B) The classes are not mutually exclusive. 
C) There are too many classes. 
D) Class limits cannot be computed.

Question 9

A class interval,which is the width of a class,can be determined by subtracting the lower limit of a class from the lower limit of the next higher class.

Accepted Answer

A) True 
 B)False

Question 10

A suggested class interval can be determined by the formula:

Accepted Answer

A) True 
 B)False

Question 11

In a frequency distribution,the number of observations in a class is called class

Accepted Answer

A) midpoint 
B) interval 
C) array 
D) frequency 
A) midpoint 
B) interval 
C) array 
D) frequency

Question 12

Refer to the following distribution of commissions:   For the distribution above,what is the midpoint of the class with the greatest frequency?

Accepted Answer

A) 1400 
B) 1500 
C) 1700 
D) The midpoint cannot be determined 
A) 1400 
B) 1500 
C) 1700 
D) The midpoint cannot be determined

Question 13

In constructing a frequency distribution,you should try to have open-ended classes such as "Under $100" and "$1,000 and over".

Accepted Answer

A) True 
 B)False

Question 14

What is the following table called?

Accepted Answer

A) Histogram 
B) Frequency polygon 
C) Cumulative frequency distribution 
D) Frequency distribution 
A) Histogram 
B) Frequency polygon 
C) Cumulative frequency distribution 
D) Frequency distribution

Question 15

What is the number of observations in each class of a frequency distribution called?__________________________

Accepted Answer

The answer of What is the number of observations in...

Question 16

Refer to the following distribution:   What are the class limits for class with the highest frequency?

Accepted Answer

A) 55 and 64 
B) 54 and 64 
C) 55 and up to 65 
D) 55 and 64.5 
A) 55 and 64 
B) 54 and 64 
C) 55 and up to 65 
D) 55 and 64.5

Question 17

A group of 100 students were surveyed about their interest in a new International Studies program.Interest was measured in terms of high,medium,or low.30 students responded high interest;40 students responded medium interest;30 students responded low interest.What is the relative frequency of students with high interest?

Accepted Answer

A) 30% 
B) 50% 
C) 40% 
D) Cannot be determined 
A) 30% 
B) 50% 
C) 40% 
D) Cannot be determined

Question 18

A frequency distribution for qualitative data has class limits.

Accepted Answer

A) True 
 B)False

Question 19

When classes in a frequency table are constructed so that each observation will fit into only one class,the categories are ________________________.

Accepted Answer

The answer of When classes in a frequency table are...

Question 20

The age distribution of a sample of part-time employees at Lloyd's Fast Food Emporium is:   What type of chart should be drawn to present this data?

Accepted Answer

A) Histogram 
B) Simple line chart 
C) Cumulative Frequency Distribution 
D) Pie chart 
E) Frequency polygon 
A) Histogram 
B) Simple line chart 
C) Cumulative Frequency Distribution 
D) Pie chart 
E) Frequency polygon

A pie chart shows the number of observations in each class.

When a class interval is expressed as: 100 up to 200,

To convert a frequency distribution to a relative frequency distribution,divide each class frequency by the number of classes.

In constructing a frequency polygon,class frequencies are scaled on which axis? ______

A frequency polygon is a very useful graphic technique when comparing two or more distributions.

Refer to the following frequency distribution on days absent during a calendar year by employees of a manufacturing company: How many employees were absent between 3 up to 6 days?

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

A student was interested in the cigarette smoking habits of college students and collected data from an unbiased random sample of students.The data is summarized in the following table: Why is the table NOT a frequency distribution?

A class interval,which is the width of a class,can be determined by subtracting the lower limit of a class from the lower limit of the next higher class.

A suggested class interval can be determined by the formula:

In a frequency distribution,the number of observations in a class is called class

Refer to the following distribution of commissions: For the distribution above,what is the midpoint of the class with the greatest frequency?

In constructing a frequency distribution,you should try to have open-ended classes such as "Under $100" and "$1,000 and over".

What is the following table called?

What is the number of observations in each class of a frequency distribution called?__________________________

Refer to the following distribution: What are the class limits for class with the highest frequency?

A frequency distribution for qualitative data has class limits.

When classes in a frequency table are constructed so that each observation will fit into only one class,the categories are ________________________.

The age distribution of a sample of part-time employees at Lloyd's Fast Food Emporium is: What type of chart should be drawn to present this data?

What Is Statistics

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

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

Linear Regression and Correlation

Multiple Regression and Correlation Analysis

Chi-Square Applications

Filters

Exam 2: Describing Data: Frequency Distributions and Graphic Presentations

A pie chart shows the number of observations in each class.

When a class interval is expressed as: 100 up to 200,

To convert a frequency distribution to a relative frequency distribution,divide each class frequency by the number of classes.

In constructing a frequency polygon,class frequencies are scaled on which axis? ______

A frequency polygon is a very useful graphic technique when comparing two or more distributions.

Refer to the following frequency distribution on days absent during a calendar year by employees of a manufacturing company: How many employees were absent between 3 up to 6 days?

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

A student was interested in the cigarette smoking habits of college students and collected data from an unbiased random sample of students.The data is summarized in the following table: Why is the table NOT a frequency distribution?

A class interval,which is the width of a class,can be determined by subtracting the lower limit of a class from the lower limit of the next higher class.

A suggested class interval can be determined by the formula:

In a frequency distribution,the number of observations in a class is called class

Refer to the following distribution of commissions: For the distribution above,what is the midpoint of the class with the greatest frequency?

In constructing a frequency distribution,you should try to have open-ended classes such as "Under $100" and "$1,000 and over".

What is the following table called?

What is the number of observations in each class of a frequency distribution called?__________________________

Refer to the following distribution: What are the class limits for class with the highest frequency?

A frequency distribution for qualitative data has class limits.

When classes in a frequency table are constructed so that each observation will fit into only one class,the categories are ________________________.

The age distribution of a sample of part-time employees at Lloyd's Fast Food Emporium is: What type of chart should be drawn to present this data?

What Is Statistics

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

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

Linear Regression and Correlation

Multiple Regression and Correlation Analysis

Chi-Square Applications

Filters