Mathematics, 12.03.2020 17:26 mads3499
Using the sat dataset, fit a model with the total SAT score as the response and expend, salary, ratio and takers as predictors. Perform regression diagnostics on this model to answer the following questions. Display any plots that are relevant. Do not provide any plots about which you have nothing to say. Suggest possible improvements or corrections to the model where appropriate. (a) Check the constant variance assumption for the errors. (b) Check the normality assumption. (c) Check for large leverage points. (d) Check for outliers. (e) Check for influential points. (f) Check the structure of the relationship between the predictors and the response.
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Based on the graph, what is the initial value of the linear relationship? a coordinate plane is shown. a line passes through the y-axis at -2 and the x-axis at 3.
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