Deck 2: Exploring Data With Tables and Graphs

Question 1

The frequency distribution below summarizes employee years of service for Alpha Corporation. Find the class midpoint for class 1-5.

A) 3.0 years
B) 3.5 years
C) 5.0 years
D) 2.5 years

Answer 1

A

Question 2

Which of the following cumulative frequency distribution corresponds to the given frequency distribution?

Answer 2

A

Question 3

The following frequency distribution represents the scores on a math test. Find the class midpoint of scores for the interval 40-59.

A) 49.5
B) 48.5
C) 50.5
D) 49.0

Answer 3

A

Question 4

The weights (in pounds) of 22 members of the junior varsity football team are listed below.

Question 5

The Kappa Iota Sigma Fraternity polled its members on the weekend party theme. The vote was as follows: six for toga, four for hayride, eight for luau, and two for masquerade. Display the vote count in a Pareto chart.

Question 6

The histogram below represents the number of television sets per household for a sample of U.S. households. What is the sample size?

A) 5 households
B) 100 households
C) 50 households
D) 90 households

Question 7

A store manager counts the number of customers who make a purchase in his store each day. The data are as follows.

Question 8

A nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40 years. The blood
Pressure readings (in mm Hg) were given to the nearest whole number. What class width was used to construct
The relative frequency distribution?

A) 100 years
B) 9 years
C) 11 years
D) 10 years

Question 9

A nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40 years. The blood
Pressure readings were given to the nearest whole number. Approximately what percentage of the people aged
25-40 had a systolic blood pressure reading between 110 and 139 mm Hg inclusive?
Systolic Blood Pressure for People Aged 25-40 Years

A) 39%
B) 89%
C) 59%
D) 75%

Question 10

The scatterplot below displays the amount of nitrous oxide (NO) explained by the amount of carbon monoxide (CO) emissions in million metric tons over a ten year period in the United States. Select the choice that best
Describes any relationship between the variables.

Question 11

The two key parts of a regression equation involve the ________ and the y-________.

A) slope; axis
B) slope; intercept
C) asymptote; axis
D) asymptote; intercept

Question 12

Identify the cumulative frequency distribution that corresponds to the given frequency distribution.

Question 13

The following data show the number of laps run by each participant in a marathon. Which of these choices display the correct stemplot?

Question 14

The following frequency distribution analyzes the scores on a math test. Find the class boundaries of scores interval 90-99.

A) 89.5, 100.5
B) 89.5, 100.5
C) 89.5, 99.5
D) 90.5, 99.5

Question 15

Which choice displays the best graphic display of the amount of nitrous oxide (NO) explained by the amount of carbon monoxide (CO) emissions in million metric tons over a ten year period in the United States? The data set
Is below:

Question 16

Analysis of the data from 25 mothers indicates that an infant's birth weight (g), y, can be estimated by a mother's weight (kg), x, using the regression equation y = 31x + 1501. If a mother's weight is 70 kg, the infant's birth
Weight can be estimated as ________ g.

A) 3671
B) 1718
C) 48,701
D) 46

Question 17

A nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40 years. The blood
Pressure readings were given to the nearest whole number. Approximately what percentage of the people aged
25-40 had a systolic blood pressure reading between 110 and 119 mm Hg inclusive?
Systolic Blood Pressure for People Aged 25-40 Years

A) 35%
B) 3.5%
C) 30%
D) 0.35%

Question 18

Question 19

Analysis of the data from 25 mothers indicates that an infant's birth weight (g), y, can be estimated by a mother's weight (kg), x, using the regression equation For every ________ kg increase in a mother's
Weight, the infant's birth weight increases by ________ g.

A) 1501; 31
B) 31; 1501
C) 1; 31
D) 31; 1

Question 20

The attendance counts for this season's basketball games are listed below. Which of these choices display the correct stemplot?

Question 21

The Kappa Iota Sigma Fraternity polled its members on the weekend party theme. The vote was as follows: six for toga, four for hayride, eight for luau, and two for masquerade. Which of these choices display the correct
Pareto chart?

Question 22

The following data represent the number of cars passing through a toll booth during a certain time period over a number of days. Which of these choices display the correct dotplot?

Question 23

The following frequency distribution displays the scores on a math test. Find the class boundaries of scores interval 40-59.

A) 50.5, 58.5
B) 49.5, 58.5
C) 50.5, 59.5
D) 49.5, 59.5

Question 24

The frequency distribution below summarizes the home sale prices in the city of Summerhill for the month of June. Determine the width of each class.

A) 28
B) 61
C) 30
D) 31

Question 25

The following data show the number of laps run by each participant in a marathon.

Question 26

A nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40 years. The blood
Pressure readings were given to the nearest whole number. Approximately what percentage of the people aged
25-40 had a systolic blood pressure reading between 110 and 119 mm Hg inclusive?

A) 0.35%
B) 30%
C) 35%
D) 3.5%

Question 27

According to USA Today, the largest categories of sports equipment sales are as follows: fishing ($2.0 billion); firearms and hunting ($3.1 billion); camping ($1.7 billion); golf ($2.5 billion). What type of graph would depict
These different categories and their relative amounts the best?

A) A Pareto chart
B) A pie chart
C) A bar chart
D) A column chart

Question 28

The frequency distribution below summarizes employee years of service for Alpha Corporation. Determine the width of each class.

A) 4 years
B) 10 years
C) 6 years
D) 5 years

Question 29

Smoking and the episodes of lung cancer have a high correlation, but it does not prove ________.

A) exponentiation
B) correlation
C) causation
D) a linear relationship

Question 30

The linear ________ coefficient denoted by r measures the ________ of the linear association between two variables.

A) correlation; strength
B) squares; weakness
C) probability; likelihood
D) exponential; exponent

Question 31

Attendance records at a school show the number of days each student was absent during the year. The days absent for each student were as follows.

Question 32

Wagenlucht Ice Cream Company is always trying to create new flavors of ice cream. They are market testing three kinds to find out which one has the best chance of becoming popular. They give small samples of each to
20 people at a grocery store. Four ice cream tasters preferred the Strawberry Cream, 12 preferred Choco-Nuts,
And four loved the Orange Mint. Construct a Pareto chart to represent these preferences. Choose the vertical
Scale so that the relative frequencies are represented.

Question 33

A manufacturer records the number of errors each work station makes during the week. The data are as follows.

Question 34

A nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40 years. The blood
Pressure readings were given to the nearest whole number. Approximately what percentage of the people aged
25-40 had a systolic blood pressure reading between 110 and 139 mm Hg inclusive?

A) 75%
B) 59%
C) 39%
D) 89%

Question 35

The following frequency distribution depicts the scores on a math test. Find the class midpoint of scores for the interval 95-99.

A) 98.0
B) 97.0
C) 96.5
D) 97.5

Question 36

Identify the cumulative frequency distribution that corresponds to the given frequency distribution.

Question 37

The histogram below represents the number of television sets per household for a sample of U.S. households. What is the sample size?

A) 100
B) 5
C) 90
D) 50

Question 38

The ages of the 45 members of a track and field team are listed below. Which of these choices display the correct stemplot?

Question 39

The frequency distribution below summarizes the home sale prices in the city of Summerhill for the month of June. Determine the class midpoint (in thousand $) for the class 235.0-265.9.

A) 250.4
B) 250.55
C) 250.5
D) 250.45

Question 40

The following data consists of the weights (in pounds) of 15 randomly selected women and the weights of 15 randomly selected men. Which of these choices display the correct back-to-back stemplot?

Question 41

Define the difference between a Relative Frequency Distribution and a Cumulative Frequency Distribution.

Question 42

A school district performed a study to find the main causes leading to its students dropping out of school. Thirty cases
were analyzed, and a primary cause was assigned to each case. The causes included unexcused absences (U), illness (I),
family problems (F), and other causes (O). The results for the thirty cases are listed below:

Question 43

Describe how a data point labeled as an outlier can affect the analysis of a data set in a frequency distribution or
histogram.

Question 44

Use the high closing values of Statstar Inc. stock from the years 2005-2016 to construct a time-series graph. (Let
x = 0 represent 2005 and so on.) Identify a trend.

Question 45

Describe the differences between a histogram and a stemplot and discuss the advantages and disadvantages of
each.

Question 46

Explain in your own words why a bar graph can be misleading if one or both of the scales begin at some value
other than zero.

Question 47

Kevin asked some of his friends how many hours they had worked during the previous week at their
after-school jobs. The results are shown below. Construct a frequency distribution. Use 4 classes, a class width of 2 hours and a lower limit of 3 for class 1.

Question 48

The frequency distribution below summarizes the home sale prices in the city of Summerhill for the month of
June. Determine the class width, class midpoint, and the class boundaries for the class 235.0-265.9.

Question 49

A bar chart and a Pareto chart both use bars to show frequencies of categories of categorical data. What
characteristic distinguishes a Pareto chart from a bar chart and how does that characteristic help us in
understanding the data?

Question 50

The following data set represents Heather's average monthly charges (in $) for cable TV for the past 24 months.

Question 51

Suppose that a data set has a minimum value of 24 and a maximum of 79 and that you want 5 classes. Explain
how to find the class width for this frequency table. What happens if you mistakenly use a class width of 11
instead of 12?

Question 52

Describe at least two advantages to using stemplots rather than frequency distributions.

Question 53

In a survey, 20 people were asked how many magazines they had purchased during the previous year. The
results are shown below. Construct a histogram to represent the data. Use 4 classes with a class width of 10, and
begin with a lower class limit of -0.5. What is the approximate amount at the center?

Question 54

The frequency table below shows the amount of weight loss during the first month of a diet program for a
group of men. Constructing a frequency polygon. Applying a loose interpretation of the requirements for a
normal distribution, do the pounds of weight loss appear to be normally distributed? Why or why not?

Question 55

The following data set represents Heather's average monthly charges (in $) for cable TV for the past 12 months. Construct a frequency distribution with 4 classes.

Question 56

The data shows the roundtrip mileage that 43 randomly selected students drive to school each day. Construct a
frequency polygon. Applying a loose interpretation of the requirements for a normal distribution, do the
mileages appear to be normally distributed? Why or why not?

Question 57

The following figures represent Latisha's monthly charges (in $) for long distance telephone calls for the past
twelve months.

Question 58

Graphs should be constructed in a way that is fair and objective. A common deceptive graph alters the axes of
the graph in what way?

Question 59

The graph below shows the number of car accidents occurring in one city in each of the years 2011 through
2016. The number of accidents dropped in 2013 after a new speed limit was imposed. Does the graph distort the
data? How would you redesign the graph to be less misleading?

Question 60

In a survey, 26 voters were asked their ages. The results are shown below. Construct a histogram to represent
the data (with 5 classes beginning with a lower class limit of 19.5 and a class width of 10). What is the
approximate age at the center?

Question 61

The frequency distribution below summarizes employee years of service for Alpha Corporation. Determine the width of each class.

A) 10
B) 5
C) 4
D) 6

Question 62

Lori asked 24 students how many hours they had spent doing homework during the previous week. The results
are shown below. Construct a frequency distribution. Use 4 classes, a class width of 2 hours, and a lower limit of 8 for

Question 63

Question 64

Kevin asked some of his friends how many hours they had worked during the previous week at their
after-school jobs. The results are shown below. Construct a frequency distribution. Use 4 classes, a class width of 2 hours, and a lower limit of 3 for
class 1.

Question 65

The following frequency distribution analyzes the scores on a math test. Find the class boundaries of scores interval 40-59.

A) 39.5, 59.5
B) 39.5, 58.5
C) 40.5, 59.5
D) 40.5, 58.5

Question 66

The frequency distribution below summarizes the home sale prices in the city of Summerhill for the month of June. Determine the class midpoint for class 235.0-265.9.

A) 250.55
B) 250.50
C) 250.45
D) 250.40

Question 67

The frequency distribution for the weekly incomes of students with part-time jobs is given below. Construct the corresponding relative frequency distribution. Round relative frequencies to the nearest
Hundredth of a percent if necessary.

Question 68

Using a strict interpretation of the relevant criteria characterizing a normal distribution,does the frequency
distribution below appear to have a normal distribution? Does the distribution appear to be normal if the
criteria are interpreted very loosely?

Question 69

The scores on a recent statistics test are given in the frequency distribution below. Construct the corresponding relative frequency distribution. Round relative frequencies to the nearest hundredth of a percent if necessary.

Question 70

The following frequency distribution analyzes the scores on a math test. Find the class boundaries of scores interval 95-99.

A) 94.5, 99.5
B) 94.5, 100.5
C) 95.5, 100.5
D) 95.5, 99.5

Question 71

A medical research team studied the ages of patients who had strokes caused by stress. The ages of 34 patients

Question 72

The following frequency distribution analyzes the scores on a math test. Find the class midpoint of scores interval 95-99.

A) 96.5
B) 98.0
C) 97.0
D) 97.5

Question 73

On a math test, the scores of 24 students were

Question 74

The following frequency distribution analyzes the scores on a math test. Find the class midpoint of scores interval 40-59.

A) 50.5
B) 49.5
C) 48.5
D) 49.0

Question 75

Construct one table that includes relative frequencies based on the two frequency distributions below. Do those
weights appear to be about the same or are they substantially different.? Round to the nearest tenth of a percent
if necessary.

Question 76

Question 77

The frequency distribution below summarizes employee years of service for Alpha Corporation. Find the class boundaries for class 26-30.

A) 25.5, 20.5
B) 25.5, 30.5
C) 26.5, 29.5
D) 26.5, 30.5

Question 78

The frequency distribution below summarizes the home sale prices in the city of Summerhill for the month of June. Determine the width of each class.

A) 28
B) 61
C) 31
D) 30

Question 79

The frequency distribution below summarizes the home sale prices in the city of Summerhill for the month of June. Find the class boundaries for class 80.0-110.9.

A) 79.90, 110.95
B) 79.95, 110.95
C) 80.00, 110.95
D) 79.90, 111.0

Question 80

The frequency distribution below summarizes employee years of service for Alpha Corporation. Find the class midpoint for class 1-5.

A) 3.5
B) 2.5
C) 5.0
D) 3.0