

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. 
100 
B. 
80 


C. 
97 
D. 
93 


Hint 


2. 
What is the median for a set of quiz scores? 





A. 
15 
B. 
13 


C. 
16 
D. 
17 


Hint 


3. 
Find the mean of {15, 7, 9, 25, 4}. 


A. 
9 
B. 
10 


C. 
13 
D. 
12 


Hint 


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


A. 
5 
B. 
3 


C. 
7 
D. 
2 


Hint 


5. 
Ben races motorcycles for fun. So far, his lap times, in seconds, are 32, 35, 33, and 32. What time must Ben get on his final lap for his average lap time to be 32.6? 


A. 
32 
B. 
33 


C. 
32.6 
D. 
31 


Hint 


