For a dataset with nnn values, what is the value of ∑i=1n(xi−xˉ)\sum_{i=1}^n (x_i - \bar{x})∑i=1n(xi−xˉ)?
0
nxˉn\bar{x}nxˉ
σ\sigmaσ
xˉ\bar{x}xˉ