A graphing calculator was used to fit the model E(y) = 0 + 1x + ...

[awywial]

Question 1

Which equation represents a complete second-order model for two quantitative independent variables?
◦ E(y) = β₀ + β₁x1 +  β₂x2 +  β₃ + β₄
◦ E(y) = β₀ + β₁x1x2 +  β₂ + β₃
◦ E(y) = β₀ + β₁ + β₂ +  β₃x2 +  β₄x1 + β₅
◦ E(y) = β₀ + β₁x1 +  β₂x2 +  β₃x1x2 +  β₄ + β₅

Question 2

A graphing calculator was used to fit the model E(y) = β₀ + β₁x + β₂x² to a set of data. The resulting screen is shown below.



Which number on the screen represents the estimator of  β₂?
◦ 5.5
◦ 11
◦ .9286
◦ .9405

[Alyson.hiatt@yahoo.com]

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[awywial]

Great answer, keep it coming

[ghepp]

Thanks for the timely response, appreciate it