

1. 
Refer to the set of data below. If 15 were removed from the set of data, which values would change? 





A. 
mean, median, and range 
B. 
range 


C. 
range and mean 
D. 
mode 


Hint 


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


A. 
325 
B. 
115 


C. 
273 
D. 
100 


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. 
100 


C. 
97 
D. 
80 


Hint 


4. 
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. 
33 
B. 
32.6 


C. 
31 
D. 
32 


Hint 


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


A. 
most frequent number 
B. 
arithmetic average 


C. 
middle number 
D. 
highest number 


Hint 


