For the data shown in the stem-and-leaf plot, what is the effect on the mean and median of adding the value 20 to the data set?

A.
The mean is decreased by about 0.1 and the median is decreased by 2.

B.
The mean is decreased by about 0.1 and the median is decreased by 3.

C.
The mean is decreased by about 0.15 and the median is decreased by 2.

D.
The mean is decreased by about 0.15 and the median is decreased by 3.

Question

For the data shown in the stem-and-leaf plot, what is the effect on the mean and median of adding the value 20 to the data set?  
   
 
  
 
  
 

 
 

  

  A. 
  The mean is decreased by about 0.1 and the median is decreased by 2.   
   

 
 

  

  B. 
  The mean is decreased by about 0.1 and the median is decreased by 3.   
   

 
 

  

  C. 
  The mean is decreased by about 0.15 and the median is decreased by 2.   
   

 
 

  

  D. 
  The mean is decreased by about 0.15 and the median is decreased by 3.

anonymous · Answer

http://static.k12.com/calms_media/media/1417500_1418000/1417693/1/1349366d505f54d9f968044c6fe97ec47facad33/FGA_130917_261016.jpg

anonymous · Answer

Please help I need to finish this!

anonymous · Answer

This is the English section. You should re-post your question in the mathematics section :)