Answer:

Step-by-step explanation:

 
        
             
        
        
        
The answer is <span>20 + 9 – 4 – (−4)
i took the test</span>
        
                    
             
        
        
        
1. It is the subset of a group  - Group sample.
2. It equally favors all members of a group sample  
- Random sample.
3. It collects data on members of a group  -  Survey.
4. It does not equally favor all members of a group - Biased sample.
5. It includes all members of a group  
-  Population.
6. It analyzes data collected from a group - Mean.
I have matched all concepts in accordance with statistical use, hope it helps.
 
        
             
        
        
        
Step-by-step explanation:

Firstly we have to take variables to L.H.S and numbers to R.H.S

Hope it helps