Question 1

The weights (in pounds)of 22 members of the junior varsity football team are listed below. $\begin{array} { l l l l l l l l l l l } 144 & 152 & 142 & 151 & 160 & 152 & 131 & 164 & 141 & 153 & 140 \end{array}$
$\begin{array} { l l l l l l l l l l l } 144 & 175 & 156 & 147 & 133 & 172 & 159 & 135 & 159 & 148 & 171 \end{array}$
Which of these choices display the correct stemplot?

Accepted Answer

A) 
 
B)

Question 2

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?

Accepted Answer

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

Question 3

The following figures represent Latisha's monthly charges (in $)for long distance telephone calls for the past twelve months. $\begin{array} { r r r r } 7.12 & 10.40 & 14.70 & 18.24 \ 10.48 & 16.47 & 7.53 & 15.45 \ 13.04 & 15.48 & 13.33 & 12.56 \end{array}$
Construct a frequency distribution with four classes.

Accepted Answer

The answer of The following figures represent Latisha's monthly charges...

Question 4

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. $\begin{array}{c|c}
\text { Sale Price (in thousand \$) } & \text { Frequency } \
\hline 80.0-110.9 & 2 \
111.0-141.9 & 5 \
142.0-172.9 & 7 \
173.0-203.9 & 10 \
204.0-234.9 & 3 \
235.0-265.9 & 1
\end{array}$

Accepted Answer

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

Question 5

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

Accepted Answer

The answer of Describe at least two advantages to using...

Question 6

The following data show the number of laps run by each participant in a marathon. $\begin{array} { l l l l l l l l l l l l } 46 & 65 & 55 & 43 & 51 & 48 & 57 & 30 & 43 & 49 & 32 & 56 \end{array}$
Which of these choices display the correct stemplot?

Accepted Answer

A) 
 
B)

Question 7

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? $\begin{array} { l l l l l l } \text { Women: } & 128 & 150 & 118 & 166 & 142 \ & 122 & 137 & 110 & 175 & 152 \ & 145 & 126 & 139 & 111 & 170 \ \text { Men: } & 140 & 153 & 199 & 186 & 169 \ & 136 & 176 & 162 & 196 & 155 \ & 173 & 190 & 141 & 166 & 153 \end{array}$

Accepted Answer

A) 
 
B)

Question 8

The frequency distribution below summarizes employee years of service for Alpha Corporation. Find the class midpoint for class 1 -5. $\begin{array}{c|c}
\text { Years of Service } & \text { Frequency } \
\hline 1-5 & 5 \
6-10 & 20 \
11-15 & 25 \
16-20 & 10 \
21-25 & 5 \
26-30 & 3
\end{array}$

Accepted Answer

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

Question 9

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. $\begin{array}{r|c}
\text { Sale Price (in thousand } \$) & \text { Frequency } \
\hline 80.0-110.9 & 2 \
111.0-141.9 & 5 \
142.0-172.9 & 7 \
173.0-203.9 & 10 \
204.0-234.9 & 3 \
235.0-265.9 & 1
\end{array}$

Accepted Answer

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

Question 10

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.

Accepted Answer

The answer of Explain in your own words why a...

Question 11

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. $\begin{array} { l l l l l l l l l l l l } 
5 & 6 & 5 & 4 & 5 & 5 & 9 & 8 & 5 & 3 & 7 & 6 \
6 & 7 & 5 & 6 & 7 & 5 & 6 & 8 & 6 & 7 & 8 & 4
\end{array}$
Construct a frequency distribution. Use 4 classes, a class width of 2 hours, and a lower limit of 3 for class $1 .$

Accepted Answer

The answer of Kevin asked some of his friends how...

Question 12

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

Accepted Answer

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

Question 13

The following data represent the number of cars passing through a toll booth during a certain time period over a number of days. $\begin{array} { l l l l l l l l l l l l l l l } 38 & 39 & 37 & 37 & 44 & 38 & 41 & 38 & 39 & 35 & 42 & 39 & 43 & 37 & 41 \end{array}$
Which of these choices display the correct dotplot?

Accepted Answer

A)  Number of Cars Passing Through
a Toll Booth
 
B)  Number of Cars Passing Through
a Toll Booth
 
C)  Number of Cars Passing Through
a Toll Booth
 
D)  Number of Cars Passing Through
a Toll Booth

Question 14

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?

Accepted Answer

The answer of The graph below shows the number of...

Question 15

A store manager counts the number of customers who make a purchase in his store each day. The data are as follows. $\begin{array} { l l l l l l l l l l } 
10 & 11 & 8 & 14 & 7 & 10 & 10 & 11 & 8 & 7
\end{array}$
Which of these choices display the correct dotplot?

Accepted Answer

A)  Number of Customers Per Day
 
B)  Number of Customers Per Day
 
C)  Number of Customers Per Day
 
D)  Number of Customers Per Day

Question 16

The attendance counts for this season's basketball games are listed below. Which of these choices display the correct stemplot? $\begin{array} { l l l l } 227 & 239 & 215 & 219 \end{array}$
$\begin{array} { l l l l } 221 & 233 & 229 & 233 \end{array}$
$\begin{array} { l l l l } 235 & 228 & 245 & 231 \end{array}$

Accepted Answer

A) 
 
B)

Question 17

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

Accepted Answer

The answer of Describe how a data point labeled as...

Question 18

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

Accepted Answer

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

Question 19

The frequency distribution below summarizes employee years of service for Alpha Corporation. Determine the width of each class. $\begin{array}{c|c}
\text { Years of Service } & \text { Frequency } \
\hline 1-5 & 5 \
6-10 & 20 \
11-15 & 25 \
16-20 & 10 \
21-25 & 5 \
26-30 & 3
\end{array}$

Accepted Answer

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

Question 20

A manufacturer records the number of errors each work station makes during the week. The data are as follows. $\begin{array} { l l l l l l l l l l l l l } 6 & 3 & 2 & 3 & 5 & 2 & 0 & 2 & 5 & 4 & 2 & 0 & 1 \end{array}$
Which of these choices display the correct dotplot?

Accepted Answer

A)  Number of Errors for the Week
 for Workstations
 
B)  Number of Errors for the Week 
for Workstations 
 
C)  Number of Errors for the Week
 for Workstations
 
D)  Number of Errors for the Week
for Workstations

Exam 2: Exploring Data With Tables and Graphs

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

The following data show the number of laps run by each participant in a marathon. $\begin{array} { l l l l l l l l l l l l } 46 & 65 & 55 & 43 & 51 & 48 & 57 & 30 & 43 & 49 & 32 & 56 \end{array}$ Which of these choices display the correct stemplot?

The frequency distribution below summarizes employee years of service for Alpha Corporation. Find the class midpoint for class 1 -5. $\begin{array}{c|c}\text { Years of Service } & \text { Frequency } \\\hline 1-5 & 5 \\6-10 & 20 \\11-15 & 25 \\16-20 & 10 \\21-25 & 5 \\26-30 & 3\end{array}$

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.

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

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?

A store manager counts the number of customers who make a purchase in his store each day. The data are as follows. $\begin{array} { l l l l l l l l l l } 10 & 11 & 8 & 14 & 7 & 10 & 10 & 11 & 8 & 7\end{array}$ Which of these choices display the correct dotplot?

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

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

The frequency distribution below summarizes employee years of service for Alpha Corporation. Determine the width of each class. $\begin{array}{c|c}\text { Years of Service } & \text { Frequency } \\\hline 1-5 & 5 \\6-10 & 20 \\11-15 & 25 \\16-20 & 10 \\21-25 & 5 \\26-30 & 3\end{array}$

A manufacturer records the number of errors each work station makes during the week. The data are as follows. $\begin{array} { l l l l l l l l l l l l l } 6 & 3 & 2 & 3 & 5 & 2 & 0 & 2 & 5 & 4 & 2 & 0 & 1 \end{array}$ Which of these choices display the correct dotplot?