ANSWER 

EXPLANATION
The given expression is 

This is the same as:

In index notation, we write this as 

To write this as a negative index, we use the property:

This implies that;

 
        
             
        
        
        
You would multiply rows by seats to get the total so you multiply 24 by 18. so that would get you 432 seats in total. Hope it helps!
        
                    
             
        
        
        
Answer:
4. 
- this shows that the height of 13 year old females in one class is less variable than the other class. 
- this means that the height of students in class with range 6 may vary from person to person while that in class with range 3 maybe clustered around one another. 
- we're expected to see students of almost same height in class ,with range 3, more than the students in class with range 6.
5. 
arranging the values in ascending order 
2, 2, 4, 4, 4, 5, 6, 6, 6, 8, 8, 9 



median = 1/ 2 [ n/2th term +{ (n/2)+ 1 }th term ] 
for n is even 
= 1/ 2 [ 6th + 7th term] 
= 1/ 2 [5 + 6] 
= 5.5
mode = value with highest frequency or the value that appears most frequently In a given set of data. 
mode =4, 6 
because both 4and 6 appear 3 times in the given set of data which is the highest frequency.