The Regression $R ^ { 2 }$ Is Defined as Follows:
A)

The regression $R ^ { 2 }$ 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) $\frac { S S R } { n - 2 }$

Correct Answer:

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