What four assumptions do we make about the simple linear regression model?
Answer to relevant QuestionsWhen a least squares line is fit to the 8 observations in the natural gas consumption data, we obtain SSE = 2.568. Calculate s2 and s. Model: y = β0 + β1x1 + β2x2 + β3x3 + ε Sample size: n = 30 What is the difference between a confidence interval and a prediction interval? Consider the situation in which a gas company wishes to predict weekly natural gas consumption for its city. In the exercises of Chapter we used the single predictor variable x, average hourly temperature, to predict y, ...(1) Analyze the studentized deleted residuals in the page margin for Options 1 and 2 (see SDR1 and SDR2). (2) Is hospital 14 an outlier with respect to its y value when using Option 2? (3) Consider a questionable large ...
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