By NEAS - 4/18/2018 12:20:25 PM
MS Module 16: Regression estimates – homework assignment
(The attached PDF file has better formatting.)
Homework assignment:
Solve one of the following end of chapter problems, showing all work. The numerical answers are in the appendix to the textbook; for the homework assignment, show how the answer is derived.
● Problem 13 (a), (b), (c), and (d) on page 623 (1st ed) / page 637 (2nd ed).
○ Part (a) derives the estimated least squares equation; show how to derive β0 and β1
○ Part (b) uses the estimates from Part (a) to derive the fitted value and the residual.
○ Part (c) computes SSE; divide by the degrees of freedom to estimate σ2 and σ.
○ Part (d) uses the complement of the ratio of SSE to SST.
● Problem 17 (b), (c), (d), and (e) on page 624 (1st ed) / page 638 (2nd ed).
○ Part (b): show how to derive β0 and β1
○ Part (c) uses the estimates from Part (a) to derive the fitted value.
○ Part (d): show how to derive SSE, then σ2, then σ.
○ Part (d) uses the complement of the ratio of SSE to SST.
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