Number two is thirty weeks
        
             
        
        
        
Answer:
-2 and 6
Step-by-step explanation:
-2+6=4
-2×6=-12
 
        
                    
             
        
        
        
You can't determine that unless you are given the sequence. of course you can infer about it and is easy but mathematically, there are an infinite number or sequences with these terms but u need the sequence
        
             
        
        
        
Answer: -3y+12
Step-by-step explanation:
 
        
             
        
        
        
Answer: The range is 13.  The mean is 10. The standard deviation is 4.62 . 
Step-by-step explanation:
The given data : 3, 6, 9, 11, 15, 16
Total number of data values : n = 6
The mean of data is given by :-

The standard deviation is given by :-

The range of the data : Maximum value -Minimum value
