

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


A. 
9.4 
B. 
1 


C. 
8 
D. 
9 


Hint 


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


A. 
21 
B. 
47.4 


C. 
71 
D. 
55 


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. 
97 
B. 
100 


C. 
93 
D. 
80 


Hint 


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


A. 
12 
B. 
10 


C. 
9 
D. 
13 


Hint 


5. 
The median is the __________ of a set of numbers. 


A. 
arithmetic average 
B. 
most frequent number 


C. 
middle number 
D. 
highest number 


Hint 


