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Question Number 167963 by Trissa last updated on 30/Mar/22

$$show{that}_{{\beta }_{1=(n\mathrm{\Sigma }xy-\mathrm{\Sigma }x\mathrm{\Sigma }y)/(n\mathrm{\Sigma }{x}^2-{\left(\mathrm{\Sigma }x\right)}^2)=\mathrm{\Sigma }xy/\mathrm{\Sigma }{\left(xy\right)}^{2}wherex=(x-\stackrel{-}{x})andy=(y-\stackrel{-}{y})}}$$$$$$

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