

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


A. 
1 
B. 
9 


C. 
8 
D. 
9.4 


Hint 


2. 
Find the mode of {325, 100, 115, 621, 325, 325, 100}. 


A. 
100 
B. 
325 


C. 
273 
D. 
115 


Hint 


3. 
Find the median of {55, 21, 21, 69, 71}. 


A. 
21 
B. 
71 


C. 
55 
D. 
47.4 


Hint 


4. 
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. 
97 
B. 
80 


C. 
100 
D. 
93 


Hint 


5. 
The mean is the _______ of a set of numbers. 


A. 
arithmetic average 
B. 
middle number 


C. 
most frequent 
D. 
highest number 


Hint 


