The Regression Model $\hat{ Y }$ = 180 + 6x₁ - 2x₂ Has Been Fitted to -

question 18

Essay

The regression model $\hat{ Y }$
= 180 + 6x₁ - 2x₂ has been fitted to a set of data.Comment on whether interaction appears to exist between x₁ and x₂.
Interaction: _________________________________
Comments:

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