The mean of 5 observations x, x + 2, x + 4, x + 6 and x + 8 is 11, then the value of x is : (1)
A. 4
B. 7
C. 11
D. 6
Answer:B
The mean of 5 observations x, x + 2, x + 4, x + 6 and x + 8 is 11, then the value of x is : (1)
A. 4 B. 7 C. 11 D. 6