question_answer

If the first five elements of the set xi + 5 \[\text{i }=\text{ 1},\text{ 2},\text{ 3},\text{ }....\text{5}\]and the next five elements are replaced by \[\text{xj}-\text{5},\text{ j}=\text{6 }....\text{ 1}0\]then the mean will change by

A)  0                                              

B)  5

C)  10                         

D)         25