Final Exam Study Guide - Last Minute Notes

Just a couple of last minute thoughts:

• There were no example problems that used the Durbin-Watson statistic. That doesn't mean it won't be on the exam! The D-W table is part of the formula sheet, so I'm expecting a question on it.
• Remember that if DW is less than d_L, there's autocorrelation. If it's between d_L and d_U, it's inconclusive. If it's between d_U and 2+d_L, there's no autocorrelation. I doubt we'll be asked about the range from 2-4.
• Review how to read those Minitab outputs! There's bound to be at least one on the exam. Remember that in Minitab output, SS stands from Sum of Squares. S stands for S_YX. The Coefficient of the Intercept is b₀. The Coefficient of the other (independent) variable is b₁. SE stands for standard error.
• There weren't any practice problems on the confidence interval for mean/individual Y. I would expect one of those since the formulas are on the sheet. He'll probably give us h_i and S_XY. Remember to use n-2 when looking up the value for t in this case.
  
• Remember that most of the answers can be derived from the data in the question and the formula sheet. You're not really expected to memorize very much. If you can't figure it out, look at the formula sheet.
• Remember to bring a copy of the formula sheet, a calculator and a #2 pencil. Don't laugh! I forgot a pencil for the midterm and ran out to Walgreen's a half hour before the exam.