A SS Is Given By $\sum ( X - \bar { X } )$

Multiple Choice

A SS is given by.

A) $\sum ( X - \bar { X } )$
B) $\sum ( X + \bar { X } )$
C) $\sum ( X + \bar { X } ) ^ { 2 }$
D) $\sum ( X - \bar { X } ) ^ { 2 }$