Question 1

Construct a stem and leaf display for given data.
-Here are the final scores for the last 16 games played by the local basketball team. 
45545365
67755759
87867974
67758765

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 2

Solve the problem.
-Samuel consumed 2129 calories of food on Monday, 2343 calories on Tuesday, and 1802 calories on Wednesday. In order for Samuel's average calorie intake to equal a daily average of 2200 calories,
How many calories of food must he consume on Thursday?

Accepted Answer

A) 2567 calories 
B) 2119 calories 
C) 2091 calories 
D) 2526 calories 
A) 2567 calories 
B) 2119 calories 
C) 2091 calories 
D) 2526 calories

Question 3

In a school survey, students showed these preferences for instructional materials. Answer the question.  
-About how many students would you expect to prefer lectures in a school of 900 students?

Accepted Answer

A) About 324 students 
B) About 162 students 
C) About 180 students 
D) About 18 students 
A) About 324 students 
B) About 162 students 
C) About 180 students 
D) About 18 students

Question 4

Construct a frequency polygon.
-$\begin{array}{l|c}
\begin{array}{l}
\text { Number of } \
\text { vacation days }
\end{array} & \begin{array}{c}
\text { Number of } \
\text { employees }
\end{array} \
\hline 1-5 & 10 \
6-10 & 25 \
11-15 & 35 \
16-20 & 20 \
21-25 & 10
\end{array}$

Accepted Answer

A) 
  
B)    
A) 
  
B)

Question 5

useful for comparing the size of each category with the whole (ie the proportion of the whole population falling in each category). A bar graph is more useful for comparing the sizes of different categories with each other. Find the mean of the set of data.
-1.202, 12.337, 4.185, 7.194, 5.294 Round your answer to three decimal places.

Accepted Answer

A) 1.299 
B) 6.042 
C) 7.553 
D) 5.800 
A) 1.299 
B) 6.042 
C) 7.553 
D) 5.800

Question 6

Find the indicated probability.
-The table shows the percentage of college students who prefer a given pizza topping.   What is the probability that a randomly selected student prefers cheese toppings? Round to the nearest hundredth.

Accepted Answer

A) 0.31 
B) 0.33 
C) 0.34 
D) 0.10 
A) 0.31 
B) 0.33 
C) 0.34 
D) 0.10

Question 7

Use the graph to answer the question.
-  Mike decides to buy shares of companies X and Y, which were initially selling for the same price. The changes in each stock's value over 90 days are shown in the graph above. At its peak, about
How much more was stock Y worth than X?

Accepted Answer

A) $65 
B) $90 
C) $45 
D) $75 
A) $65 
B) $90 
C) $45 
D) $75

Question 8

Find the median for the given frequency distribution.
-$\begin{array}{l|l}
\text { Value } & \text { Frequency } \
\hline 60 & 4 \
62 & 8 \
64 & 12 \
66 & 20 \
68 & 31 \
70 & 13
\end{array}$

Accepted Answer

A) 66 
B)  68 
C)  65 
D)  67 
A) 66 
B)  68 
C)  65 
D)  67

Question 9

Find the median for the given frequency distribution.
-$\begin{array}{c|l}
\text { Value } & \text { Frequency } \
\hline 0 & 8 \
1 & 12 \
2 & 15 \
3 & 20 \
4 & 20 \
5 & 14
\end{array}$

Accepted Answer

A) 2.5 
B)  $3.5$ 
C)  4 
D)  3 
A) 2.5 
B)  $3.5$ 
C)  4 
D)  3

Question 10

In a school survey, students showed these preferences for instructional materials. Answer the question.  
-About how many students would you expect to prefer computers in a school of 650 students?

Accepted Answer

A) About 234 students 
B) About 130 students 
C) About 117 students 
D) About 36 students 
A) About 234 students 
B) About 130 students 
C) About 117 students 
D) About 36 students

Question 11

Suppose that you want to construct a pie chart to represent the following data. 
$\begin{array} { c c } 
\text { Blood Type } & \text { Frequency } \
\hline \text { O } & 90 \
\text { A } & 84 \
\text { B } & 18 \
\text { AB } & 8
\end{array}$
 Explain how you would calculate the angle for the sector corresponding to the blood type
O.

Accepted Answer

First calculate the relative f

Question 12

Find the indicated probability.
-In a survey, 50 students were asked to name their favorite color. The table below shows the results. 
$\begin{array}{l|c}
\text { Color } & \text { Number of students } \
\hline \text { Red } & 11 \
\hline \text { Blue } & 9 \
\hline \text { Green } & 6 \
\hline \text { Yellow } & 4 \
\hline \text { Purple } & 9 \
\hline \text { Brown } & 3 \
\hline \text { Orange } & 3 \
\hline \text { Pink } & 5
\end{array}$

If a student is selected at random, what is the probability that their favorite color is purple?

Accepted Answer

A)  $\frac { 9 } { 50 }$ 
B)  $\frac { 9 } { 100 }$ 
C)  $\frac { 9 } { 10 }$ 
D)  9 
A)  $\frac { 9 } { 50 }$ 
B)  $\frac { 9 } { 100 }$ 
C)  $\frac { 9 } { 10 }$ 
D)  9

Construct a stem and leaf display for given data. -Here are the final scores for the last 16 games played by the local basketball team. 45545365 67755759 87867974 67758765

Solve the problem. -Samuel consumed 2129 calories of food on Monday, 2343 calories on Tuesday, and 1802 calories on Wednesday. In order for Samuel's average calorie intake to equal a daily average of 2200 calories, How many calories of food must he consume on Thursday?

In a school survey, students showed these preferences for instructional materials. Answer the question. -About how many students would you expect to prefer lectures in a school of 900 students?

Find the indicated probability. -The table shows the percentage of college students who prefer a given pizza topping. What is the probability that a randomly selected student prefers cheese toppings? Round to the nearest hundredth.

Use the graph to answer the question. - Mike decides to buy shares of companies X and Y, which were initially selling for the same price. The changes in each stock's value over 90 days are shown in the graph above. At its peak, about How much more was stock Y worth than X?

Find the median for the given frequency distribution. - Value Frequency 60 4 62 8 64 12 66 20 68 31 70 13

Find the median for the given frequency distribution. - Value Frequency 0 8 1 12 2 15 3 20 4 20 5 14

In a school survey, students showed these preferences for instructional materials. Answer the question. -About how many students would you expect to prefer computers in a school of 650 students?

Suppose that you want to construct a pie chart to represent the following data. Blood Type Frequency O 90 A 84 B 18 AB 8 Explain how you would calculate the angle for the sector corresponding to the blood type O.

The Art of Problem Solving

The Basic Concepts of Set Theory

Introduction to Logic

Numeration Systems

Number Theory

The Real Numbers and Their Representations

The Basic Concepts of Algebra

Graphs, Functions, and Systems of Equations and Inequalities

Geometry

Counting Methods

Probability

Personal Financial Management

Trigonometry Formerly

Graph Theory

Voting and Apportionment

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Exam 12: Statistics