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The formula for the ordinary least squares slope parameter in a simple linear regression model Suppose...

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Economics

The formula for the ordinary least squares slope parameter in a simple linear regression model Suppose the simple linear regression model is given as y=β0+β1x+uy=β0+β1x+u. Assuming ∑i=1n(xi−x¯)2>0∑i=1nxi−x¯2>0, which of the following best represents the ordinary least squares (OLS) slope parameter β1ˆβ1^?

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