Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 1 Outline Questions, Comments? Quiz Go Over Quiz New Homework Devore Chapter 12, 13 - Regression Thursday – ANOVA with Kai

Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 2 Independent, predictor, explanatory Bivariate Scatter plot Insert trend line Excel Analysis tool

Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 3 Model equation:

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Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 15 Comparisons Why are comparisons important? What kind of things would we want to compare?

Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 16 Examples of comparisons Previous Semester

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Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 18 Normal, known standard deviation

Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 19 What if you don’t know the standard deviations?

Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 20 What if you don’t know the standard deviations? (if samples are sufficiently large)

Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 21 But what if the samples are smaller?

Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 22 But what if the samples are smaller?

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Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 24 If the variances are not equal

Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 25 Paired or unpaired?

Session 17 University of Southern California ISE500 October 21, 2014 Geza P. Bottlik Page 26 Proportions, m and n large