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Daily Notes for MSTI 130

Daily Notes for MSTI 130. Spring 2006 Dr. Kris Green TR 11:00 – 12:20, K059. Day 01 – Thurs. 01/12. Cancelled – Joint Math Meetings in San Antonio Posted the announcement below:

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Daily Notes for MSTI 130

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  1. Daily Notes for MSTI 130 Spring 2006 Dr. Kris Green TR 11:00 – 12:20, K059 MSTI 130-04

  2. Day 01 – Thurs. 01/12 • Cancelled – Joint Math Meetings in San Antonio • Posted the announcement below: • Mon, Jan 09, 2006 -- Missing First ClassDue to a conference, Dr. Green will be out of town during the first class meeting of MST 130 (section 4). Thus, class on Thursday (11-12:20) is cancelled. You should, however, download the syllabus (under "Course Information") and review it before class on Tuesday so that you can ask questions; there will be an online quiz about the syllabus, so be sure that you read it thoroughly. In class on Tuesday, we will begin chapter 1 of the text (available in the bookstore) so it would be good to read chapter 1 as well. MSTI 130-04

  3. Day 02 – Tues. 01/17 • Discuss syllabus (online, should have read) • Download and submit survey • At same time, take pictures of students in groups of 3 • Discuss proper naming of files (LastFI HW00) and point out errors as they occur • Remind about quiz 1 • Overview of unit 1, seeing the world as data • Chapter 1 – Problem Solving, Section A Why Data? Work exploration 1A in class after discussion (in small groups) of examples MSTI 130-04

  4. Day 03 – Thurs. 01/19 • Quiz reminders (quiz 2 due Tues.) [3] • HW 1 – memo (pg. 37-8) – due 1/26 [2] • Discuss “Beef n’ Buns” examples [40] • Complete Exploration (pg. 34-4) [25 – group; use a recorder to type notes and send to the rest of the group] • Read and discuss memo problem [20] MSTI 130-04

  5. Class 04 – Tues. 01/24 • Mistakes on quizzes 1 and 2 • Definitions and terms (methods of collecting data vs. types of data) • Units for numerical data • Exploration 2A • Questions about chapter one memo • Computer skills – starting up Word/Excel and screen navigation MSTI 130-04

  6. Class 05 – Thurs. 01/26 • Administrivia • How to get feedback on homework • Homework 2 • Download and install StatPro at home/dorm • Pull up C02 Over Easy.xls • Examples 2B1 and 2 • Coding data and using comments in Excel • Create two spreadsheets for Cruise Line • One observational, one survey-related MSTI 130-04

  7. Class 06 – Tues. 01/31 • Copying and pasting into Word from Excel • Review of quiz questions • Discuss HW 01 feedback • Ex 3A3 “C03 Tots.xls” – calculate stats using Excel and StatPro • Exploration 3A using Excel MSTI 130-04

  8. Class 07 – Thurs. 02/02 • Algebra and means • Talk about relative vs. absolute cell refs and set up a spreadsheet allow these to be input and to measure the result fixed change and percent change in the mean salary • Using exploration 3A, make a table • Using StatPro to generate tables of statistics and explore: exploration 3B • More means and quartiles discussion: some of the HW problems? Examples? MSTI 130-04

  9. Class 08 – Tues. 02/06 • In class quiz: Chapter 3 HW #4 (30 min) – turned into a class discussion/exercise • Standard deviation development (50 min) • Measuring spread • Deviations, and sum of dev = 0 • Fixing this problem with standard deviation • Degrees of freedom MSTI 130-04

  10. Class 09 – Thurs. 02/09 • Q&A about homework and activities • Example 4A3 (20 min) • Use Excel to compute averages, medians, standard deviations • Exploration 4A (15 min) – discussion only • Definitions (10 min) • z-scores • rules of thumb • Example 4B3 (15 min) – collected, no analysis • Sorting the data by Z-scores helps MSTI 130-04

  11. Class 10 – Tues. 02/14 • Example 4B3 discussion (10 min) • Exploration 4B (20 min) • Memo 4 in class (30 min) • Homework 04 questions (20 min) MSTI 130-04

  12. Class 11 – Thurs. 02/16 • Examples from 5A • Reading histograms (5A1) [5min] • Checking rules of thumb (5A2) [5 min] • Discuss bad histograms (5A3) [10 min] • Making histograms (C05 BeefnBuns 2) • From data [10 min] • From z-scores [15 min] • Exploration 5A and using histograms to infer about the problem context [30 min] MSTI 130-04

  13. Class 12 – Tues. 02/21 • Exam Review • Format of the exam and topics for the exam • Problem 1. Let’s more seriously discuss and investigate HW 4, #2 about the countries • Rating them as “average” – compared to what? • What’s constitutes a large std. deviation? • Problem 2. Continued analysis of the cruise ship problem (page 114) MSTI 130-04

  14. Class 13 • Midterm Exam MSTI 130-04

  15. Class 14 – Tues. 02/28 • Return midterm • Discuss scatterplots • Independent (explanatory) and Dependent (response) • Reading them, axes, making them • Correlation • Two variables and z-scores • Matrix of correlations and strength of relationships MSTI 130-04

  16. Class 15 – Thurs. 03/02 • Correlation visualization exercise (Exp 6A) • Line Fitting Exercise (Exp 6B) • Put worksheet on Bb to fill in • Discussion of slope, y-intercept, making trendlines, R^2 MSTI 130-04

  17. Class 16 – Tues. 03/14 • Simple regression (section 7A) • Reading the equation of the line • R^2 and S_e • Diagnostic graphs (fitted vs actual, etc.) • Example 7A1, 7A2, 7A3 • HW 7 due date moved to Thursday • Quiz 7 due Thursday before class MSTI 130-04

  18. Class 17 – Thurs. 03/16 • Proportionality and what that means • Exploration 7A to be handed in electronically • Add in the following • Interpret y (or x) intercepts for each model • Explain quality of each model using R^2 • Explain accuracy of each model’s predictions using S_e (and compare to std. dev. Of y) MSTI 130-04

  19. Class 18 – 03/21 • Exploration 8A and making multiple regression models • Interpretation of the models • Adjusted R^2 • Other examples in section 8A MSTI 130-04

  20. Class 19 – Tues. 03/28 • More on Multiple regression • Example 8A1, 8A2, 8A3 • P-values • Adjusted R^2 • Fitted vs. Actual diagnostic graph • Residuals vs. Fitted diagnostic graph • Homework #4 – page 222 MSTI 130-04

  21. Class 20 – Thurs. 03/30 • Dummy Variables in Regression • Exploration 8B (page 218) • Discuss parts together (use Example 8B1 to get the models for Exploration 8B started) • If time, discuss memo 8 as an example • Homework will be the problems (1-4) on pages 221-222, due next Thursday in class; note error in problem 2 statement MSTI 130-04

  22. Class 21 – Tues. 04/04 • Assumptions about regression (15 min) • Anscombe data • Linearity • Randomness in the residuals • Review of regression models (15 min) • Overview of nonlinear models (50 min) • What makes them different? • Examples (Exploration2.xls) MSTI 130-04

  23. Class 22 – Thurs. 04/06 • Notation for functions y = f(x) • Parameters vs. variables • Comparison of functions (10A2 and 3) • Graphing these in Excel • Shifts and scalings and reflections Exp 10B) • Notation • Power Functions (incl. recip/square/sqrt) MSTI 130-04

  24. Class 23 – Tues. 04/11 • Continue analyzing the shifts, scales, etc. from last Thursday’s class • Set up homework 10 (memo, pp. 273-4) • Administrivia • HW 10 due Next Tuesday • Rework of 8 due Next Thursday • HW 11 – TBA • Quiz 11 due Tuesday by 11 MSTI 130-04

  25. Class 24 – Thurs. 04/13 • Continue working on and discussing nonlinear fits by shifting and scaling • HW 09 (chapter 10 memo) • Calculating R^2 MSTI 130-04

  26. Class 25 – Tues. 04/18 • Homework 10 – due Tuesday, Apr. 25 • Problems on pp. 299-300 • Memo, pg. 301 • Overview of the semester – notes below • Interpretation of nonlinear models • Course Evaluations MSTI 130-04

  27. Class 25 – Thurs. 04/20 • Continue with nonlinear regression • Total change vs. Rate of change • Marginal Analysis and Parameter Analysis • Diagnostic graphs • Transformations of data to linearize (p. 285) • Multiplicative Models • Polynomial Models • Don’t worry about calculating Se and R^2 MSTI 130-04

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