Deck 2: Charts and Graphs

Question 1

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

Answer 1

True

Question 2

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

Answer 2

False

Question 3

A Pareto chart and a pie chart are both types of qualitative graphs.

Answer 3

False

Question 4

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

Question 5

A cross tabulation is a graph that separately displays the frequency counts for two variables.

Question 6

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

Question 7

When looking at a scatter plot, if a trend can be discerned between changes in one variable that appear to be related to changes in the other variable, there is likely a relationship between the two variables.

Question 8

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

Question 9

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

Question 10

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.

Question 11

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

Question 12

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.

Question 13

A cumulative frequency polygon is also called an ogive.

Question 14

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.

Question 15

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

Question 16

To consider historical data as part of their decisions, management often uses time-series data.

Question 17

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

Question 18

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

Question 19

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

Question 20

In contrast to quantitative data graphs that are plotted along a numerical scale, qualitative graphs are plotted using non-numerical categories.

Question 21

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

Question 22

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

Question 23

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

Question 24

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

Question 25

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

Question 26

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.

Question 27

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

Question 28

To show differences between different series during the same time periods, different trend lines, each in a different color, and all using the same x axis for graphing.

Question 29

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.

Question 30

Time-series data should be shown from oldest time period to the most recent.

Question 31

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.

Question 32

To compare two series of data during the same time period, the graph should show the first and then show the second after that, all in one line.

Question 33

Visualization of time-series data is considered descriptive business analytics.

Question 34

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

Question 35

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

Question 36

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

Question 37

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.

Question 38

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

Question 39

The point of "cleaning" time-series data is to be sure all the data are accurate.

Question 40

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

Question 41

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

Question 42

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

Question 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

Question 44

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

Question 45

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

Question 46

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

Question 47

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

Question 48

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

Question 49

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

Question 50

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

Question 51

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

Question 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 percentage of sales transactions on Saturday that were between $100 and $150 was ___.

A)20%
B)40%
C)60%
D)80%
E)10%

Question 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 at least $100 each was ___.

A)100%
B)10%
C)80%
D)20%
E)15%

Question 54

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

Question 55

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

Question 56

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

Question 57

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

Question 58

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

Question 59

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

Question 60

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

Question 61

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

Question 62

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%

Question 63

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

Question 64

The 2019 and 2020 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.

Question 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 capitalizations of $200,000,000 or less.

A)50
B)100
C)700
D)800
E)900

Question 66

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

Question 67

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

Question 68

Suppose a market survey of 200 consumers was conducted to determine the likelihood of each consumer purchasing a new computer next year.Data were collected based on the age of the consumer and are shown below: Using the table above, which of the following statements is true about the surveyed consumers?

A)More of the surveyed consumers likely to purchase a computer next year are younger.
B)More of the surveyed consumers likely to purchase a computer next year are older.
C)The surveyed consumers likely to purchase a computer are evenly distributed among the age brackets.
D)The largest group of surveyed consumers likely to purchase a new computer next year are between 25 and 34 years old.
E)None of the above statements are true.

Question 69

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

Question 70

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 bar chart
C)A cumulative frequency distribution
D)A frequency distribution
E)A scatter plot

Question 71

The following graphic of PCB Failures is a ___.

A)scatter Plot
B)Pareto Chart
C)pie chart
D)cumulative histogram chart
E)line diagram

Question 72

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 distribution

Question 73

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%

Question 74

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

Question 75

According to the following graphic, "Bent Pins" account for ___% of PCB Failures.

A)10
B)20
C)30
D)40
E)50

Question 76

The 2019 and 2020 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 2019 and $1.8 billion in 2020.Company C's sales in 2020 were ___.

A)$342 million
B)$630 million
C)$675 million
D)$828 million
E)$928 million

Question 77

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%

Question 78

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

Question 79

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

Question 80

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