

1. 
Find the median of {55, 21, 21, 69, 71}. 


A. 
21 
B. 
71 


C. 
47.4 
D. 
55 


Hint 


2. 
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. 
100 
B. 
80 


C. 
97 
D. 
93 


Hint 


3. 
The mean is the _______ of a set of numbers. 


A. 
arithmetic average 
B. 
middle number 


C. 
most frequent 
D. 
highest number 


Hint 


4. 
Find the mode of {2, 2, 3, 9, 7, 9, 3, 7, 3}. 


A. 
7 
B. 
5 


C. 
3 
D. 
2 


Hint 


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


A. 
arithmetic average 
B. 
most frequent number 


C. 
highest number 
D. 
middle number 


Hint 


