Deck 2: Exploring Data With Tables and Graphs

Question 1

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

Answer 1

C

Question 2

The two key parts of a regression equation involve the ____________ and th? y-____________.

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

Answer 2

A

Question 3

Which 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:

Answer 3

D

Question 4

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 )7 5 % B )8 9 % C )5 9 % D )39%

Question 5

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

Question 6

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

Question 7

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

Question 8

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

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

Question 9

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

Question 10

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

Question 11

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

Question 12

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

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

Question 13

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.

A) There is a negative linear association between NO and CO.
B) There is a positive linear association between NO and CO.
C) Overall, there is no noticeable relationship between NO and CO.
D) NO can be explained by CO.

Question 14

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) 3.5%
C) 30%
D) 35%

Question 15

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

Question 16

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

Question 17

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 18

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) 90.5, 99.5
D) 89.5, 99.5

Question 19

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

Question 20

Question 21

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

Question 22

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
B) 50
C) 90
D) 100

Question 23

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

Question 24

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 25

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

Question 26

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

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

Question 27

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 )5 9 % B )3 9 % C )8 9 % D )75%

Question 28

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

Question 29

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 30

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

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

Question 31

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) 250.45
D) 250.5

Question 32

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

Question 33

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) 61
B) 31
C) 28
D) 30

Question 34

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

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

Question 35

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 36

The following data represent the number of cars passing through a toll booth during a certain time period over a number of days.

Question 37

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

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

Question 38

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

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

Question 39

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 40

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

Question 41

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 42

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

Question 43

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 44

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 45

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 46

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

Question 47

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

Question 48

The following data set represents Heather's average monthly charges (in $)for cable TV for the
past 12 months.

Question 49

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

Question 50

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 51

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 52

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 53

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

Question 54

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 55

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 56

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

Question 57

Graphs should be constructed in a way that is fair and objective. A common deceptive graph 19)__________
alters the axes of the graph in what way?

Question 58

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.

Question 59

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 60

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: