The Regression R² Is Defined as Follows:
A) $\frac { E S S } { T S S }$

Multiple Choice

The regression R² is defined as follows:

A) $\frac { E S S } { T S S }$
B) $\frac { R S S } { T S S }$
C) $\frac { \sum _ { i = 1 } ^ { n } \left( Y _ {i } - \bar { Y } \right) \left( X _ {i } - \bar { X } \right) } { \sqrt { \sum _ { i = 1 } ^ { n } \left( Y _ { i } - \bar { Y } \right) ^ { 2 } \sqrt { \sum _ { i = 1 } ^ { n } \left( X _ { i} - \bar { X } \right) ^ { 2 } } } }$
D) $\frac { S S R } { n - 2 }$