Deck 2: Exploring Data With Tables and Graphs

Question 1

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

Answer 1

C

Question 2

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

Answer 2

B

Question 3

A store manager counts the number of customers who make a purchase in his store each day. The data are as follows. Which of these choices display the correct dotplot?

Answer 3

A

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 (in mm Hg)were given to the
Nearest whole number. What class width was used to construct the relative frequency
Distribution?

Question 5

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 6

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=31 x+1501 . If a mother's weight is 70 kg , the infant's birth weight can be estimated as ________ g .

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

Question 7

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

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

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

Question 9

Identify the cumulative frequency distribution that corresponds to the given frequency

Question 10

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

Question 11

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

Question 12

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 13

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=31 x+1501 . For every _______ kg increase in a mother's weight, the infant's birth weight increases by _______g.

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

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 139 mm Hg inclusive?

Question 15

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

Question 16

Which of these choices display the correct scatterplot?

Question 17

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

Question 18

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

Question 19

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

Question 20

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 21

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 22

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?

Question 23

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.

Question 24

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

Question 25

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 26

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 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 119 mm Hg inclusive?

Question 28

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 29

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

Question 30

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

Question 31

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

Question 32

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

Question 33

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 34

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.

Question 35

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 36

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

Question 37

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

Question 38

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 39

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

Question 40

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

Question 41

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 42

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 43

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 44

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

Question 45

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

Question 46

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 47

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 48

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 49

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 50

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

Question 51

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 52

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

Question 53

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 54

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

Question 55

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 56

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 57

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

Question 58

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

Question 59

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 60

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.