The first-order model below was fit to a set of data. $$E ( y ) = \beta _ { 0 } + \beta _ { 1 } x _ { 1 } + \beta _ { 2 } x _ { 2 }$$ Explain how to determine if the constant variance assumption is satisfied.

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The Answer of The first-order model below was fit to a set of data. $$E ( y ) = \beta _ { 0 } + \beta _ { 1 } x _ { 1 } + \beta _ { 2 } x _ { 2 }$$ Explain how to determine if the constant variance assumption is satisfied.

The First-Order Model Below Was Fit to a Set of Data