

1. 
You have scores of 62, 75, and 90 on three of your history exams. What do you need to get on your fourth exam in order to have a mean of 80? 


A. 
80 
B. 
97 


C. 
100 
D. 
93 


Hint 


2. 
The mean is the _______ of a set of numbers. 


A. 
most frequent 
B. 
highest number 


C. 
arithmetic average 
D. 
middle number 


Hint 


3. 
What is the median for a set of quiz scores? 





A. 
16 
B. 
13 


C. 
15 
D. 
17 


Hint 


4. 
Find the mean of {15, 7, 9, 25, 4}. 


A. 
9 
B. 
12 


C. 
10 
D. 
13 


Hint 


5. 
Find the mode of {2, 2, 3, 9, 7, 9, 3, 7, 3}. 


A. 
3 
B. 
2 


C. 
7 
D. 
5 


Hint 


