If the mean of the data 12, 8, 6, 3, 9 is 7.6. If 5 is added to each observation then the new mean is
A. 2.6
B. 32.6
C. 12.6
D. 13.6
Answer:C
If the mean of the data 12, 8, 6, 3, 9 is 7.6. If 5 is added to each observation then the new mean is
A. 2.6 B. 32.6 C. 12.6 D. 13.6