$\Sigma \left( X _ { i } - \bar { X } \right) \left( Y _ { i } - \bar { Y } \right) = \Sigma Y _ { i } X _ { i } - \bar { Y } \Sigma X _ { i }$

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The Answer of $\Sigma \left( X _ { i } - \bar { X } \right) \left( Y _ { i } - \bar { Y } \right) = \Sigma Y _ { i } X _ { i } - \bar { Y } \Sigma X _ { i }$

$\Sigma \left( X _ { i } - \bar { X } \right) \left( Y _ { i } - \bar { Y } \right) = \Sigma Y _ { i } X _ { i } - \bar { Y } \Sigma X _ { i }$

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Σ(Xi−Xˉ)(Yi−Yˉ)=ΣYiXi−YˉΣXi\Sigma \left( X _ { i } - \bar { X } \right) \left( Y _ { i } - \bar { Y } \right) = \Sigma Y _ { i } X _ { i } - \bar { Y } \Sigma X _ { i }Σ(Xi​−Xˉ)(Yi​−Yˉ)=ΣYi​Xi​−YˉΣXi​

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$\Sigma \left( X _ { i } - \bar { X } \right) \left( Y _ { i } - \bar { Y } \right) = \Sigma Y _ { i } X _ { i } - \bar { Y } \Sigma X _ { i }$

Correct Answer:
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