If x̄ is the mean of n observations x1 x2, x3 ............ xn then the value of \(\sum_{i=1}^{n}\)(xi - x̄) is :
A. - 1
B. 0
C. 1
D. n - 1
Answer:B
If x̄ is the mean of n observations x1 x2, x3 ............ xn then the value of \(\sum_{i=1}^{n}\)(xi - x̄) is :
A. - 1 B. 0 C. 1 D. n - 1