SOLUTION: If every data point in the original data set is decreased by 2, what will happen to the mean? A. The new mean is twice the original mean. B. The new mean is 2 more than the ori

Algebra ->  Testmodule -> SOLUTION: If every data point in the original data set is decreased by 2, what will happen to the mean? A. The new mean is twice the original mean. B. The new mean is 2 more than the ori      Log On


   

Question 1193388: If every data point in the original data set is decreased by 2, what will happen to the mean?
A. The new mean is twice the original mean.
B. The new mean is 2 more than the original mean.
C. The new mean is 2 less than the original mean.
D. The new mean is the same as the original mean.
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
Here is a data set whose mean is 8:

{4,7,9,12}  [That's because 4+7+9+12 = 32 and 32/4 = 8]

Now subtract 2 from each of the numbers in that
data set.  Then average them and see what the
new mean is.  Compare that to the original mean 8.  
Then you will be able to choose the correct answer.

Edwin