2. S052/Shopping Presentation – Slide #1 © Willett, Harvard University Graduate School of Education S052: Applied Data Analysis What Would You Like To Know About The Course? Why? Who? Next Steps? How? What? S-052 Applied Data Analysis S-052 Applied Data Analysis “There she is, right there … she’s the one who told me to use exploratory factor analysis!”

3. S052/Shopping Presentation – Slide #2 © Willett, Harvard University Graduate School of Education S052: Applied Data Analysis What? What Statistical Methods Will You Learn In S-052? More details can be found in the “Course Objectives and Content” handout on the course webpage. Do your residuals meet the standard assumptions? Test for residual normality Use influence statistics to detect atypical datapoints If your residuals are not independent, replace OLS by GLS regression analysis Use Individual growth modeling Specify a Multi-level Model Multiple Regression Analysis (MRA) Multiple Regression Analysis (MRA) If you have one predictor and it is continuous, MRA is the same as correlational analysis (but, better in many ways!) If you have one predictor and it is dichotomous, MRA is the same as a t-test (but, better in many ways!) If you have several predictors and they are all categorical, MRA is the same as ANOVA (but, better in many ways!) If time is a predictor, you need discrete-time survival analysis… If your outcome is categorical, you need to use… Binomial logistic regression analysis (dichotomous outcome) Multinomial logistic regression analysis (polytomous outcome) Use non-linear regression analysis. Transform the outcome or predictor If your outcome vs. predictor relationship is non-linear, If you have more predictors than you can deal with, Create taxonomies of fitted models and compare them. Form composites of the indicators of any common construct. Conduct a Principal Components Analysis Use Cluster Analysis Use Factor Analysis: EFA or CFA?

4. S052/Shopping Presentation – Slide #3 (Class of 1952) © Willett, Harvard University Graduate School of Education S052: Applied Data Analysis Who? Who Are The Audience for S-052? The Good News Is … S-052 extends S-030 & S-040!! If you have completed either the S-030 or S- 040 courses, you’re in and you’re fine! The Good News Is … S-052 extends S-030 & S-040!! If you have completed either the S-030 or S- 040 courses, you’re in and you’re fine! The Bad News Is … If you didn’t complete the S-030 or S-040 courses, then you should petition me … Do You Have … “A practical working knowledge of multiple regression analysis, including the use and interpretation of statistical interactions”? If so, please complete the on-line Cross- Registrant Biography Survey, accessed via 1 st page of the course website immediately I can inform you of the success of your petition, by email, as soon as HGSE enrollment is complete. The Bad News Is … If you didn’t complete the S-030 or S-040 courses, then you should petition me … Do You Have … “A practical working knowledge of multiple regression analysis, including the use and interpretation of statistical interactions”? If so, please complete the on-line Cross- Registrant Biography Survey, accessed via 1 st page of the course website immediately I can inform you of the success of your petition, by email, as soon as HGSE enrollment is complete. More details in the “Course Objectives & Content” handout, on course website. More details in the “Course Objectives & Content” handout, on course website. Anyone who needs to use quantitative methods in their own research …

5. S052/Shopping Presentation – Slide #4 © Willett, Harvard University Graduate School of Education S052: Applied Data Analysis How? What Is The Learning Model In S-052? Be Active In Your Learning Be Active In Your Learning:  Learn by Doing … real questions, real data, new methods...  Collaborate … “Un pour tous, tous pour un!” Focus On What Humans Do Best Focus On What Humans Do Best:  Plan, Guide, Check … the computer does the rest!  Parse, Interpret, Communicate … Be Active In Your Learning Be Active In Your Learning:  Learn by Doing … real questions, real data, new methods...  Collaborate … “Un pour tous, tous pour un!” Focus On What Humans Do Best Focus On What Humans Do Best:  Plan, Guide, Check … the computer does the rest!  Parse, Interpret, Communicate … Introducing the “Cognitive Apprentice” … More details in “Course Objectives & Content,” on the course website …

6. S052/Shopping Presentation – Slide #5 © Willett, Harvard University Graduate School of Education Your Mission, Should You Decide To Accept It, Is … To seek out new worlds of data and new kinds of statistical analysis. To go where no-one has gone before. But, Is That All? Your Mission, Should You Decide To Accept It, Is … To seek out new worlds of data and new kinds of statistical analysis. To go where no-one has gone before. But, Is That All? S052: Applied Data Analysis Why? What Is The Critical Mission of S-052? The scientists are in terror and the European mind stops Wyndham Lewis taking blindness rather than have his mind stop Night under wind mid garofani the petals are almost still. Ezra Pound, 19?? from Canto CXV The scientists are in terror and the European mind stops Wyndham Lewis taking blindness rather than have his mind stop Night under wind mid garofani the petals are almost still. Ezra Pound, 19?? from Canto CXV The multivariate test of differences was statistically significant The variables that loaded most heavily on the first canonical discriminant function were GHb and HMBG Between-group structure coefficients were.95 and.91 respectively. Author’s name withheld, 1990 from American Educational Research Journal, 27(3) The multivariate test of differences was statistically significant The variables that loaded most heavily on the first canonical discriminant function were GHb and HMBG Between-group structure coefficients were.95 and.91 respectively. Author’s name withheld, 1990 from American Educational Research Journal, 27(3) More details in “Course Objectives & Content,” on the course website …

7. S052/Shopping Presentation – Slide #6 © Willett, Harvard University Graduate School of Education S052: Applied Data Analysis What Next? Things To Do Before The Course Begins? Register:  No auditors … please don’t ask!  I can sign cross-registrant forms for anyone who has completed S-030/S-040 immediately; for others, I will be in touch, by email, once HGSE enrollment is complete.  All cross-registrants should complete the on-line Cross- Registrant Biography Survey. Get a Functioning Harvard PIN and Password. Check You Have HGSE Computer Access:  Cross-registrants will receive a computer account once their forms are processed by the HGSE registrar. Check the Course Website:Course Website  At … http://isites.harvard.edu/icb/icb.do?keyword=k77967.http://isites.harvard.edu/icb/icb.do?keyword=k77967.  Today, after this session: Read the “Course Objectives and Content,” Frequently-Asked Questions,” & “Topic and Assignment Schedule” materials. They are our Learning Contract.  This Weekend: Watch for the “Welcoming” email.  Before the First Class: Check Announcements on course website for the Handouts you will need to download and bring along to the first class. Register:  No auditors … please don’t ask!  I can sign cross-registrant forms for anyone who has completed S-030/S-040 immediately; for others, I will be in touch, by email, once HGSE enrollment is complete.  All cross-registrants should complete the on-line Cross- Registrant Biography Survey. Get a Functioning Harvard PIN and Password. Check You Have HGSE Computer Access:  Cross-registrants will receive a computer account once their forms are processed by the HGSE registrar. Check the Course Website:Course Website  At … http://isites.harvard.edu/icb/icb.do?keyword=k77967.http://isites.harvard.edu/icb/icb.do?keyword=k77967.  Today, after this session: Read the “Course Objectives and Content,” Frequently-Asked Questions,” & “Topic and Assignment Schedule” materials. They are our Learning Contract.  This Weekend: Watch for the “Welcoming” email.  Before the First Class: Check Announcements on course website for the Handouts you will need to download and bring along to the first class. … do something exciting!!