File: ch02, Chapter 2: Visualizing the Data

True/False

1. A summary of data in which raw data are grouped into different intervals and the number of items in each group is listed is called a frequency distribution.

Ans: True
Response: See section 2.1 Frequency Distributions
Difficulty: Easy

2. A graphical representation of a frequency distribution is called a pie chart.

Ans: False
Response: See section 2.3 Qualitative Data Graphs
Difficulty: Easy

3. If the individual class frequency is divided by the total frequency, the result is the median frequency.

Ans: False
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

	
4. A cumulative frequency polygon is also called an ogive.

Ans: True
Response: See section 2.2 Quantitative Data Graphs 
Difficulty: Medium

5. A histogram can be described as a type of vertical bar chart.

Ans: True
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

6. For any given data set, a frequency distribution with a larger number of classes will always be better than the one with a smaller number of classes. 

Ans: False
Response: See section 2.1 Frequency Distributions
Difficulty: Medium

7. One advantage of a stem and leaf plot over a frequency distribution is that the values of the original data are retained.

Ans: True
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

8.	One rule that must always be followed in constructing frequency distributions is that the adjacent classes must overlap.

Ans: False
Response: See section 2.1 Frequency Distributions
Difficulty: Medium

9.	For a company in gardening supplies business, the best graphical way to show the percentage of a total budget that is spent on each of a number of different expense categories is the stem and leaf plot.

Ans: False
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Hard

10.	A cumulative frequency distribution provides a running total of the frequencies in the classes. 

Ans: True
Response: See section 2.1 Frequency Distributions   
Difficulty: Medium

11.	The difference between the highest number and the lowest number in a set of data is called the differential frequency.

Ans: false
Response: See section 2.1 Frequency Distributions   
Difficulty: Medium

12. In a histogram, the tallest bar represents the class with the highest cumulative frequency.

Ans: False
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

13. A scatter plot shows how the numbers in a data set are scattered around their average.

Ans: False
Response: See section 2.4 Graphical Depiction of Two-Variable Numerical Data: Scatter Plots    
Difficulty: Medium

14. A scatter plot is a two-dimensional graph plot of data containing pairs of observations on two numerical variables. 

Ans: True
Response: See section 2.4 Graphical Depiction of Two-Variable Numerical Data: Scatter Plots    
Difficulty: Medium

15. A scatter plot is useful for examining the relationship between two numerical variables. 

Ans: True
Response: See section 2.4 Graphical Depiction of Two-Variable Numerical Data: Scatter Plots    
Difficulty: Medium

Multiple Choice

16.	 Consider the following frequency distribution:
				Class Interval		Frequency
				10-under 20		   15
				20-under 30		   25
				30-under 40		   10
What is the midpoint of the first class?
a) 10
b) 20
c) 15
d) 30
e) 40

Ans: c
Response: See section 2.1 Frequency Distributions 
Difficulty: Easy

17.	 Consider the following frequency distribution:
				Class Interval		Frequency
				10-under 20		   15
				20-under 30		   25
				30-under 40		   10
What is the relative frequency of the first class?
a) 0.15
b) 0.30
c) 0.10
d) 0.20
e) 0.40

Ans: b
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

18.	 Consider the following frequency distribution:
				Class Interval		Frequency
				10-under 20		   15
				20-under 30		   25
				30-under 40		   10
What is the cumulative frequency of the second class interval?
a) 25
b) 40
c) 15
d) 50

Ans: b
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium 

19.	 The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed.
				Class Interval		Frequency
				20-under 40		  30
				40-under 60		  45
				60-under 80		  80
				80-under 100		  45
	What is the midpoint of the last class?
a) 80
b) 100
c) 95
d) 90
e) 85

Ans: d
Response: See section 2.1 Frequency Distributions 
Difficulty: Easy

20.	 The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed.
				Class Interval		Frequency
				20-under 40		  30
				40-under 60		  45
				60-under 80		  80
				80-under 100		  45
What is the relative frequency of the second class?
a) 0.455
b) 0.900
c) 0.225
d) 0.750
e) 0.725

Ans: c
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium 

21.	 The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed.
				Class Interval		Frequency
				20-under 40		  30
				40-under 60		  45
				60-under 80		  80
				80-under 100		  45
What is the cumulative frequency of the third class?
a) 80
b) 0.40
c) 155
d) 75
e) 105

Ans: c
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium 

22.	 Consider the following stem and leaf plot:
				Stem		Leaf
				 1		0, 2, 5, 7
				 2		2, 3, 4, 4
				 3		0, 4, 6, 6, 9
				 4		5, 8, 8, 9
				 5		2, 7, 8
Suppose that a frequency distribution was developed from this, and there were 5 classes (10-under 20, 20-under 30, etc.).  What would the frequency be for class 30-under 40?
a) 3
b) 4
c) 6
d) 7
e) 5

Ans: e
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

23.	 Consider the following stem and leaf plot:
				Stem		Leaf
				 1		0, 2, 5, 7
				 2		2, 3, 4, 8
				 3		0, 4, 6, 6, 9
				 4		5, 8, 8, 9
				 5		2, 7, 8
Suppose that a frequency distribution was developed from this, and there were 5 classes (10-under 20, 20-under 30, etc.).  What would be the relative frequency of the class 20-under 30?
a) 0.4
b) 0.25
c) 0.20
d) 4
e) 0.50

Ans: c
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

24.	 Consider the following stem and leaf plot:
				Stem		Leaf
				 1		0, 2, 5, 7
				 2		2, 3, 4, 8
				 3		0, 4, 6, 6, 9
				 4		5, 8, 8, 9
				 5		2, 7, 8
Suppose that a frequency distribution was developed from this, and there were 5 classes (10-under 20, 20-under 30, etc.).  What was the highest number in the data set?
a) 50
b) 58
c) 59
d) 78
e) 98

Ans: b
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

25.	 Consider the following stem and leaf plot:
				Stem		Leaf
				 1		0, 2, 5, 7
				 2		2, 3, 4, 8
				 3		0, 4, 6, 6, 9
				 4		5, 8, 8, 9
				 5		2, 7, 8
Suppose that a frequency distribution was developed from this, and there were 5 classes (10-under 20, 20-under 30, etc.).  What was the lowest number in the data set?
a) 0
b) 10
c) 7
d) 2
e) 1

Ans: b
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

26. Consider the following stem and leaf plot:
				Stem		Leaf
				 1		0, 2, 5, 7
				 2		2, 3, 4, 8
				 3		0, 4, 6, 6, 9
				 4		5, 8, 8, 9
				 5		2, 7, 8
Suppose that a frequency distribution was developed from this, and there were 5 classes (10-under 20, 20-under 30, etc.).  What is the cumulative frequency for the 30-under 40 class interval?
a) 5
b) 9
c) 13
d) 14
e) 18

Ans: c
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

27.	 An instructor has decided to graphically represent the grades on a test.  The instructor uses a plus/minus grading system (i.e. she gives grades of A-, B+, etc.).  Which of the following would provide the most information for the students?
a) A histogram
b) A stem and leaf plot
c) A cumulative frequency distribution
d) A frequency distribution
e) A scatter plot

Ans: b
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

28.	 The following represent the ages of students in a class:
			 19, 23, 21, 19, 19, 20, 22, 31, 21, 20
If a stem and leaf plot were to be developed from this, how many stems would there be?
a) 2
b) 3
c) 4
d) 5
e) 10

Ans: b
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

29.	 A person has decided to construct a frequency distribution for a set of data containing 60 numbers.  The lowest number is 23 and the highest number is 68.  If 5 classes are used, the class width should be approximately _______.
a) 4
b) 12
c)  8
d)  5
e)  9

Ans: e
Response: See section 2.1 Frequency Distributions 
Difficulty: Easy

30.	 A person has decided to construct a frequency distribution for a set of data containing 60 numbers.  The lowest number is 23 and the highest number is 68.  If 7 classes are used, the class width should be approximately _______.
a) 5
b) 7
c) 9
d) 11
e) 12

Ans: b
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium 

31.	 A frequency distribution was developed.  The lower endpoint of the first class is 9.30, and the midpoint is 9.35.  What is the upper endpoint of this class?
a) 9.50
b) 9.60
c) 9.70
d) 9.40
e) 9.80

Ans: d
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium 

32.	 The cumulative frequency for a class is 27. The cumulative frequency for the next (non-empty) class will be _______.
a) less than 27
b) equal to 27
c) next class frequency minus 27
d) 27 minus the next class frequency
e) 27 plus the next class frequency

Ans: e
Response: See section 2.1 Frequency Distributions 
Difficulty: Hard

33.	 The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school:
				 Salary		Number of Graduates
				($1,000s)
				18-under 21		-
				21-under 25		-
				24-under 27		-
				29-under 30		-
Before data was collected, someone questioned the validity of this arrangement.  Which of the following represents a problem with this set of intervals?
a) There are too many intervals.
b) The class widths are too small.
c) Some numbers between 18,000 and 30,000 would fall into two different intervals.
d) The first and the second interval overlap.
e) There are too few intervals.

Ans: c
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

34.	 The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school:
				 Salary		Number of Graduates
				($1,000s)
				18-under 21		-
				21-under 25		-
				24-under 27		-
				29-under 30		-
Before data was collected, someone questioned the validity of this arrangement.  Which of the following represents a problem with this set of intervals?
a) There are too many intervals.
b) The class widths are too small.
c) Some numbers between 18,000 and 30,000 would not fall into any of these intervals.
d) The first and the second interval overlap.
e) There are too few intervals.

Ans: c
Response: See section 2.1 Frequency Distributions 
Difficulty: Hard

35.	 The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school:
				 Salary		Number of Graduates
				($1,000s)
				18-under 21		-
				21-under 25		-
				24-under 27		-
				29-under 30		-
Before data was collected, someone questioned the validity of this arrangement.  Which of the following represents a problem with this set of intervals?
a) There are too many intervals.
b) The class widths are too small.
c) The class widths are too large.
d) The second and the third interval overlap.
e) There are too few intervals.

Ans: d
Response: See section 2.1 Frequency Distributions 
Difficulty: Hard

36.	 Abel Alonzo, Director of Human Resources, is exploring employee absenteeism at the Harrison Haulers Plant during the last operating year.  A review of all personnel records indicated that absences ranged from zero to twenty-nine days per employee.  The following class intervals were proposed for a frequency distribution of absences.
				Absences			Number of Employees
				(Days)
				0-under 5				-
				5-under 10				-
				10-under 15				-
				20-under 25				-
				25-under 30				-
Which of the following represents a problem with this set of intervals?
a) There are too few intervals.
b) Some numbers between 0 and 29, inclusively, would not fall into any interval.
c) The first and second interval overlaps.
d) There are too many intervals.
e) The second and the third interval overlap.
		
Ans: b
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

37.	 Abel Alonzo, Director of Human Resources, is exploring employee absenteeism at the Harrison Haulers Plant during the last operating year.  A review of all personnel records indicated that absences ranged from zero to twenty-nine days per employee.  The following class intervals were proposed for a frequency distribution of absences.
				Absences			Number of Employees
				(Days)
				0-under 10				-
				10-under 20				-
				20-under 30				-
Which of the following might represent a problem with this set of intervals?
a) There are too few intervals.
b) Some numbers between 0 and 29 would not fall into any interval.
c) The first and second interval overlaps.
d) There are too many intervals.
e) The second and the third interval overlap.

Ans: a
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

38.	 Consider the relative frequency distribution given below:
				Class Interval		Relative Frequency
				20-under 40		  0.2
				40-under 60		  0.3
				60-under 80		  0.4
				80-under 100		  0.1
There were 60 numbers in the data set.  How many numbers were in the interval 20-under 40?
a) 12
b) 20
c) 40
d) 10
e) 15

Ans: a
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

39.	 Consider the relative frequency distribution given below:
				Class Interval		Relative Frequency
				20-under 40		  0.2
				40-under 60		  0.3
				60-under 80		  0.4
				80-under 100		  0.1
There were 60 numbers in the data set.  How many numbers were in the interval 40-under 60?
a) 30
b) 50
c) 18
d) 12
e) 15

Ans: c
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

40. 	Consider the relative frequency distribution given below:
				Class Interval		Relative Frequency
				20-under 40		  0.2
				40-under 60		  0.3
				60-under 80		  0.4
				80-under 100		  0.1
There were 60 numbers in the data set.  How many of the number were less than 80?
a) 90
b) 80
c) 0.9
d) 54
e) 100

Ans: d
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

41. Consider the following frequency distribution:
				Class Interval		Frequency
				100-under 200		   25
				200-under 300		   45
				300-under 400		   30
What is the midpoint of the first class?
a) 100
b) 150
c) 25
d) 250
e) 200

Ans: b
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

42. Consider the following frequency distribution:
				Class Interval		Frequency
				100-under 200		   25
				200-under 300		   45
				300-under 400		   30
What is the relative frequency of the second class interval?
a) 0.45
b) 0.70
c) 0.30
d) 0.33
e) 0.50

Ans: a
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

43.	 Consider the following frequency distribution:
				Class Interval		Frequency
				100-under 200		   25
				200-under 300		   45
				300-under 400		   30
	
What is the cumulative frequency of the second class interval?
a) 25
b) 45
c) 70
d) 100
e) 250

Ans: c
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

44. 	Consider the following frequency distribution:
				Class Interval		Frequency
				100-under 200		   25
				200-under 300		   45
				300-under 400		   30
What is the midpoint of the last class interval?
a) 15
b) 350
c) 300
d) 200
e) 400

Ans: b
Response: See section 2.1 Frequency Distributions 
Difficulty: Medium

45. 	Pinky Bauer, Chief Financial Officer of Harrison Haulers, Inc., suspects irregularities in the payroll system and orders an inspection of "each and every payroll voucher issued since January 1, 2000."  Each payroll voucher was inspected and the following frequency distribution was compiled.
				Errors per Voucher		Number of Vouchers
				0-under 2	500
				2-under 4	400
				4-under 6	300
				6-under 8	200
				8-under 10	100
The relative frequency of the first class interval is _________.
a) 0.50
b) 0.33
c) 0.40
d) 0.27
e) 0.67
 
Ans: b
Response: See section 2.1 Frequency Distributions 
Difficulty: Hard

46.	 Pinky Bauer, Chief Financial Officer of Harrison Haulers, Inc., suspects irregularities 
in the payroll system and orders an inspection of "each and every payroll voucher issued since January 1, 2000."  Each payroll voucher was inspected and the following frequency distribution was compiled.
				Errors per Voucher		Number of Vouchers
				0-under 2	500
				2-under 4	400
				4-under 6	300
				6-under 8	200
				8-under 10	100
The cumulative frequency of the second class interval is _________.
a) 1,500
b) 500
c) 900
d) 1,000
e) 1,200

Ans: c
Response: See section 2.1 Frequency Distributions 
Difficulty: Hard

47.	 Pinky Bauer, Chief Financial Officer of Harrison Haulers, Inc., suspects irregularities in the payroll system and orders an inspection of "each and every payroll voucher issued since January 1, 2000."  Each payroll voucher was inspected and the following frequency distribution was compiled.
				Errors per Voucher		Number of Vouchers
				0-under 2	500
				2-under 4	400
				4-under 6	300
				6-under 8	200
				8-under 10	100
The midpoint of the first class interval is _________.
a) 500
b) 2
c) 1.5
d) 1
e) 250

Ans: d
Response: See section 2.1 Frequency Distributions 
Difficulty: Hard

48.	 The 1999 and 2000 market share data of the three competitors (A, B, and C) in an oligopolistic industry are presented in the following pie charts.  
Which of the following is true?
a) Only company B gained market share.
b) Only company C lost market share.
c) Company A lost market share.
d) Company B lost market share.
e) All companies lost market share

Ans: b
Response: See section 2.3 Qualitative Data Graphs 
Difficulty: Hard

49.	 The 1999 and 2000 market share data of the three competitors (A, B, and C) in an oligopolistic industry are presented in the following pie charts.  Total sales for this industry were $1.5 billion in 1999 and $1.8 billion in 2000. Company C’s sales in 2000 were ___________. 
a) $342 million
b) $630 million
c) $675 million
d) $828 million
e) $928 million

Ans: a
Response: See section 2.3 Qualitative Data Graphs
Difficulty: Hard

50.	 The 1999 and 2000 market share data of the three competitors (A, B, and C) in an oligopolistic industry are presented in the following pie charts.  Total sales for this industry were $1.5 billion in 1999 and $1.8 billion in 2000.
Company B’s sales in 1999 were ___________.
a) $342 million
b) $630 million
c) $675 million
d) $828 million
e) $928 million

Ans: c
Response: See section 2.3 Qualitative Data Graphs
Difficulty: Medium

51.	The 1999 and 2000 market share data of the three competitors (A, B, and C) in an oligopolistic industry are presented in the following pie charts.  
Which of the following may be a false statement?
a) Sales revenues declined at company C.
b) Only company C lost market share.
c) Company A gained market share.
d) Company B gained market share.
e) Both Company A and Company B gained market share

Ans: a
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Hard

52.	Each day, the office staff at Oasis Quick Shop prepares a frequency distribution and an ogive of sales transactions by dollar value of the transactions.  Saturday's cumulative frequency ogive follows.
			
The total number of sales transactions on Saturday was _____________.
a) 200
b) 500
c) 300
d) 100
e) 400

Ans: b
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

53.	 Each day, the office staff at Oasis Quick Shop prepares a frequency distribution and an ogive of sales transactions by dollar value of the transactions.  Saturday's cumulative frequency ogive follows.
			
The percentage of sales transactions on Saturday that were under $100 each was _____________.
a) 100
b) 10
c) 80
d) 20
e) 15

Ans: d
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

54.	 Each day, the office staff at Oasis Quick Shop prepares a frequency distribution and an ogive of sales transactions by dollar value of the transactions.  Saturday's cumulative frequency ogive follows.
			
The percentage of sales transactions on Saturday that were at least $100 each was _____________.
a) 100
b) 10
c) 80
d) 20
e) 15

Ans: c
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

55.	 Each day, the office staff at Oasis Quick Shop prepares a frequency distribution and an ogive of sales transactions by dollar value of the transactions.  Saturday's cumulative frequency ogive follows.
			
The percentage of sales transactions on Saturday that were between $100 and $150 was _____________.
a) 20%
b) 40%
c) 60%
d) 80%
e) 10%

Ans: c
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Hard

56.	 Each day, the office staff at Oasis Quick Shop prepares a frequency distribution and a histogram of sales transactions by dollar value of the transactions.  Friday's histogram follows.
				
On Friday, the approximate number of sales transactions in the 125-under 150 category was _____________.
a) 50
b) 100
c) 150
d) 200
e) 85

Ans: d
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

57.	 Each day, the office staff at Oasis Quick Shop prepares a frequency distribution and a histogram of sales transactions by dollar value of the transactions.  Friday's histogram follows.
				
On Friday, the approximate number of sales transactions between $100 and $150 was _____________.
a) 100
b) 200
c) 300
d) 400
e) 500

Ans: c
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

58.	 The staff of Mr. Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a cumulative frequency ogive of waiting time for walk-in customers.
				
The total number of walk-in customers included in the study was _________.
a) 100
b) 250
c) 300
d) 450
e) 500

Ans: d
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

59.	 The staff of Mr. Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a cumulative frequency ogive of waiting time for walk-in customers.
					
The percentage of walk-in customers waiting one minute or less was _________.
a) 22%
b) 11%
c) 67%
d) 10%
e) 5%

Ans: a
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

60.	 The staff of Mr. Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a cumulative frequency ogive of waiting time for walk-in customers.
				
The percentage of walk-in customers waiting more than 6 minutes was ______.
a) 22%
b) 11%
c) 67%
d) 10%
e)  75%

Ans: b
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

61. 	The staff of Mr. Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a cumulative frequency ogive of waiting time for walk-in customers.
					
The percentage of walk-in customers waiting between 1 and 6 minutes was ___.
a) 22%
b) 11%
c) 37%
d) 10%
e) 67%

Ans: e
Response: See section 2.2 Quantitative Data Graphs
Difficulty: Medium

62.	 The staff of Mr. Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a frequency histogram of waiting time for walk-in customers.
				
Approximately _____ walk-in customers waited less than 2 minutes.
a) 20
b) 30
c) 100
d) 180
e) 200

Ans: d
Response: See section 2.2 Quantitative Data Graphs 
Difficulty: Medium

63.	 The staff of Mr. Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a frequency histogram of waiting time for walk-in customers.
				
Approximately ____ walk-in customers waited at least 7 minutes.
a) 20
b) 30
c) 100
d) 180
e) 200

Ans: b
Response: See section 2.2 Quantitative Data Graphs 
Difficulty: Medium

64.	 The staffs of the accounting and the quality control departments rated their respective supervisor's leadership style as either (1) authoritarian or (2) participatory.  Sixty-eight percent of the accounting staff rated their supervisor "authoritarian," and thirty-two percent rated him "participatory."  Forty percent of the quality control staff rated their supervisor "authoritarian," and sixty percent rated her "participatory."  The best graphic depiction of these data would be two ___________________.
a) histograms
b) frequency polygons
c) ogives
d) pie charts
e) scatter plots

Ans: d
Response: See section 2.3 Qualitative Data Graphs 
Difficulty: Hard

65.	 The staff of Ms. Tamara Hill, VP of Technical Analysis at Blue Sky Brokerage, prepared a frequency histogram of market capitalization of the 937 corporations listed on the American Stock Exchange in January 2003.

Approximately ________ corporations had capitalization exceeding $200,000,000.
a) 50
b) 100
c) 700
d) 800
e) 890

Ans: b
Response: See section 2.2 Quantitative Data Graphs 
Difficulty: Medium

66.	 The staff of Ms. Tamara Hill, VP of Technical Analysis at Blue Sky Brokerage, prepared a frequency histogram of market capitalization of the 937 corporations listed on the American Stock Exchange in January 2003.

Approximately ________ corporations had capitalizations of $200,000,000 or less.
a) 50
b) 100
c) 700
d) 800
e) 900

Ans: d
Response: See section 2.2 Quantitative Data Graphs 
Difficulty: Medium

67.	 The following graphic of PCB Failures is a _____________.

a) Scatter Plot
b) Pareto Chart
c) Pie Chart
d) Cumulative Histogram Chart
e) Line diagram

Ans: b
Response: See section 2.3 Qualitative Data Graphs 
Difficulty: Medium

68.	 According to the following graphic, the most common cause of PCB Failures is a _____________.

a) Cracked Trace
b) Bent Pin
c) Missing Part
d) Solder Bridge
e) Wrong Part 

Ans: a
Response: See section 2.3 Qualitative Data Graphs
Difficulty: Medium

69.	 According to the following graphic, “Bent Pins” account for ____% of PCB Failures.

a) 10
b) 20
c) 30
d) 40
e) 50

Ans: b
Response: See section 2.3 Qualitative Data Graphs
Difficulty: Hard

70.	 The following graphic of residential housing data (selling price and size in square feet) is a _____________.

a) scatter plot
b) Pareto chart
c) pie chart
d) cumulative histogram 
e) cumulative frequency distribuion

Ans: a
Response: See section 2.4 Graphical Depiction of Two-Variable Numerical Data: Scatter Plots    
Difficulty: Medium

71.	 The following graphic of residential housing data (selling price and size in square feet) indicates _____________.

a) an inverse relation between the two variables
b) no relation between the two variables
c) a direct relation between the two variables
d) a negative exponential relation between the two variables
e) a sinusoidal relationship between the two variables

Ans: c
Response: See section 2.4 Graphical Depiction of Two-Variable Numerical Data: Scatter Plots    
Difficulty: Medium