For calculating the mean, you want to add up all of the numbers then divide by how many numbers there are. So you'd do:
5+10+12+4+6+11+13+5 then divide that by 8
The answer to your question is: 8.25
        
             
        
        
        
Answer: 4y³-2
<em>I hope this helps, and Happy Holidays! :)</em>
 
        
             
        
        
        
Answer:
it would be 103/25
Step-by-step explanation:
 
        
                    
             
        
        
        
17 are older than 16 years old and 12 are taller than 170 cm