

1. 
Find the mean of {3, 8, 10, 1, 25}. 


A. 
8 
B. 
9 


C. 
1 
D. 
9.4 


Hint 


2. 
Find the median of {55, 21, 21, 69, 71}. 


A. 
55 
B. 
47.4 


C. 
21 
D. 
71 


Hint 


3. 
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. 
93 
B. 
80 


C. 
100 
D. 
97 


Hint 


4. 
The mean is the _______ of a set of numbers. 


A. 
most frequent 
B. 
arithmetic average 


C. 
middle number 
D. 
highest number 


Hint 


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


A. 
3 
B. 
5 


C. 
7 
D. 
2 


Hint 


