EDUR 8132 Fall 2012 Instructor: Bryan W. Griffin (bwgriffin@GeorgiaSouthern.edu) |
Announcements ---
Course Index (e.g., tests, activities, reading and other material to review for each class session)
- Regression
- Regression: One Qualitative Predictor with Two Categories
- One Qualitative Predictor with Three or more Categories
- Multiple Qualitative Predictors
- Multiple Quantitative Predictors
- Both Qualitative and Quantitative Predictors
- ANOVA
- See course notes below for exercises embedded within notes.
- Others may be added here if needed.
- Introductory notes (variables, IV vs. DV., modeling behavior, central tendency, variability, correlation, t-test, hypothesis testing logic)
- Also add brief discussion of writing hypotheses for relationships and group comparisons
- Supplemental Review with Detailed Readings and Videos
- From EDUR 8131(Educational Statistics 1) Notes 1 Descriptive Statistics (variables, writing hypotheses, central tendency, variability)
- Videos for Notes 1 Descriptive Statistics
- Supplemental Notes Displayed in Videos
- Supplemental Excel File Displayed in Videos
- Section 1: Descriptive vs. Inferential Statistics (also SPSS data entry explained)
- Section 2: Variables
- Section 3: Scales of Measurement
- Section 4: Types of Variables
- Section 5: Writing Hypotheses
- Sections 6, 7, and 8: Central Tendency (also SPSS showing descriptive statistics)
- Section 9: Distributions and Central Tendency
- Section 10: Mean of Groups
- Section 11: Inference and Sampling Error
- Sections 12 and 13: Measures of Variability (also SPSS examples)
- Section 14: Frequency Distribution and Percentile Ranks (SPSS examples) to be added
- Section 15, 16, 17: Graphical Displays (SPSS examples) to be added
- From EDUR 8131 (Educational Statistics 1) Notes 4 Hypothesis Testing and One Sample Z Test (logic of hypothesis testing, errors in hypothesis testing)
- Videos for Notes 4 Hypothesis Testing and One Sample Z Test
- Supplemental Excel File Show in Videos
- Section 1: Logic of Hypothesis Testing with a Fair Coin
- Sections on One-sample Z test omitted
- Sections 4 and 5: Errors in Hypothesis Testing (and assumptions of Z Test)
- Section 6: Power
- From EDUR 8131 (Educational Statistics 1) Notes 5 t-tests -- no instructional videos exist for these notes
- From EDUR 8131 (Educational Statistics 1) Notes 6 Correlation -- no instructional videos exist for these notes
- Simple Regression with One Quantitative Predictor
- Summary notes: Notes 8a Simple Regression
- Sample data files (each is an SPSS file):
- Detailed notes: Notes 8a Regression with One Quantitative Predictor
- Differences between Summary notes above and these Detailed notes will be highlighted soon
- Model Fit: R2, SEE and MSE, and Adjusted R2
- Table of Critical t-ratios: Critical t
- Critical F ratio: http://www.bwgriffin.com/gsu/courses/edur8132/notes/critical_f_values.pdf
- Multiple Regression with Multiple Quantitative Predictors
- Summary notes: Notes 8b Multiple Regression
- Videos and Related Material for Summary Notes 8b:
- 01 Purpose, Equation, and Partial Effects
- 02 Partial Effects
- 03 Partial Effects Part 2
- 04 Residuals and Literal Interpretation
- 05 Ice Cream Example
- 06 House Price Example
- 07 Model Fit
- 08 Inference
- 09 Confidence Intervals (Short video showing Confidence Interval with SPSS with difference confidence levels)
- 10 APA Styled Results (Word document of House Price Example in APA Style )
- Regression Coefficient Interpretation
- Detailed notes: Notes 8b Regression with Two Quantitative Predictors (Minor update to Notes 8b: the value of ΔR2 is actually the squared semi-partial correlation)
- Differences between Summary notes above and these Detailed notes will be highlighted soon
- Reading Published Research Results:
- Semi-partial Correlation (ΔR2)
- Summary notes for chat: Notes 8c Regression Semi-partial Correlation
- Detailed notes: Read Notes 8b page 5 section entitled "ΔR2, Semi-partial Correlation, and the Partial F Test of ΔR2"
- Video: ΔR2 Discussed and Illustrated in SPSS; ΔR2 Notes used in video; Test Score Data (in SPSS format) used in video
- (Note: SPSS syntax offers easy way to obtain several ΔR2 values and F ratios simultaneously: change Method=enter x1 x2 x3 x4 to Method=test (x1) (x2 x3) (x4). For Video data above, this command change produces summary output: "/METHOD=ENTER Study_Time IQ Griffin Moore" to this "/METHOD=TEST (Study_Time) (IQ) (Griffin Moore)" Add video segment to video above demonstrating this.
- Table of Critical F-ratios: Critical F at .05 and .01
- Regression with One Qualitative Predictor
- Summary notes for chat: One qualitative dichotomous predictor (2 categories)
- Summary notes for chat: One qualitative predictors with 3+ categories
- Detailed notes: Notes 8d Regression with One Qualitative Predictor
- Detailed notes: Notes 8e Regression Multiple Comparisons
- Table of Bonferroni Critical t-ratios: Dunn's Critical Values for Bonferroni t
- SPSS Data: Cars.sav
- Regression with Multiple Qualitative and Quantitative Predictors
- Summary notes for chat: Notes 8f Regression with Two Qualitative Predictors Summary
- Summary notes for chat: Notes 8g Regression with Both Qualitative and Quantitative Predictors Summary
- Detailed notes: Notes 8f Regression with Two Qualitative Predictors
- Detailed notes: Notes 8g Regression with Both Qualitative and Quantitative Predictors
- Effect sizes in regression (to be added)
- Sample size for regression (to be added)
- Standardized Regression Equation: Notes 8h Regression Standardized Coefficients (Note to instructor - update formatting, also check standardized equation subscripts)
- ANOVA Models (Note to instructor -- briefly discuss finding and using critical F values)
- Notes 9 ANOVA
- Homework answers to problems found in Notes 9 ANOVA
- Some ANOVA Exercises with APA answers (note table missing R2 values, these should be added)
- Notes 9b ANOVA without Interactions
- Notes 9c ANOVA with Interactions (Video: ANOVA with Interactions in SPSS)
- Notes 9d ANCOVA
- Supplemental Reading: Stevens Chapter 7 ANCOVA
- Excel Spreadsheet for Interactions
- Video: One-way ANCOVA with three groups
- Video: Two-way ANCOVA
- Video: One-way ANCOVA with Factor*Covariate Interaction (Unfortunately sound spikes and breaks occasionally)
- EdS Read Aloud, Think Aloud Data Results (Chat 15 worked example of ANCOVA with interaction)
- ANCOVA Data Examples
- Sample Data 1: Fictional salary discrimination
- Sample Data 2: Gun control and homicides by state
- Sample Data 3: Fictional achievement data - homework with parental support
- Sample Data 4: Fictional data showing ANCOVA power vs ANOVA
- Sample Data 5: Car MPG by country of origin controlling for horsepower and weight
- Add Waldron data to illustrate difference between gain score and ANCOVA
- Spreadsheet to Calculate Bonferroni and Scheffé Confidence Intervals (based on Editgrid.com)
- Same as above, except in Excel format
- Multiple Comparisons in Excel: Bonferroni and Scheffe (speadsheet may provide incorrect CIs)
- Multiple Comparisons in Zoho (on-line spreadsheet): Bonferroni and Scheffe (speadsheet may provide incorrect CIs)
Possible Additional Content Below
- Multi-way ANOVA
- Effect sizes in ANOVA
- Sample size for ANOVA
- Interactions in Regression
- Polynomial Regression
- Model fitting and assessment
- Common Research Designs and Related Statistical Analysis (e.g. Post-test only control, Pretest-posttest control, Non-equivalent control group, etc.)
- Logistic regression or Factor Analysis
Topic |
Readings |
1. Hypothesis Testing Logic | Chapters 5, 6 |
2. Regression | Chapter 9 |
3. Multiple Regression | Chapters 10, 11 |
4. ANOVA | Chapter 12 |
5. ANCOVA/Regression | Chapter 13 |
6. Modeling building in Regression/ANOVA | Chapter 14 |
7. Logistic Regression | Chapter 16 |
Course Calendar (will be revised throughout term)
Session 1 (8/20): 5pm to 7:45pm (Instructor's Note: Fall 2010 covered through correlation review; begin hypothesis testing Session 2)
- Syllabus
- Introductory Notes (variables, IV vs. DV., modeling behavior, central tendency, variability, correlation, t-test, SPSS, hypothesis testing logic)
Session 2 (8/27) (Instructor's Note: Fall 2010 covered through student ratings example; resume at Additional Examples for Interpretation p. 7)
- Complete Introductory Notes
- Simple Linear Regression with One Quantitative Predictor): Summary Notes 8a
September 3 -- No Class
Session 3 (9/10) (Instructor's Note: Fall 2010 covered through notes 8a.)
- Resume Simple Linear Regression: Summary Notes 8a
- Model Fit
- Review Detailed Notes 8a
Session 4 (9/17) (Instructor's Note: Fall 2010 covered summary notes 8b but did not illustrate APA presentation of final example)
- Continue with above
- Multiple Regression (two or more quantitative predictors): Summary Notes 8b
Session 5 (9/24)
- Continue with Summary Notes 8b
- Model Fit
- Detailed Notes 8b and Summary Notes 8c: Semi-partial Correlation (ΔR2)
Test 1 posted after Multiple Regression and Model Fit covered, approximately 9/24 or 10/1
Session 6 (10/1)
- Continue with Model Fit and Notes 8c
- Summary Notes 8d Regression with One Qualitative Predictor
Session 7 (10/8) (Instructor's Note: Fall 2010 covered 8d One Qualitative Predictor)
- Resume Notes 8d
- Begin Notes 8e Regression Multiple Comparisons
- Possibly begin Notes 8f Regression with Two Qualitative Predictors
Session 8 (10/15) (Instructor's Note: Fall 2010 completed one qual. predictor, briefly discussed interpretation with two qual IVs, began multiple comparisons)
- Notes 8e Regression Multiple Comparisons
- Notes 8f Regression with Two Qualitative Predictors
Session 9 (10/22) (Instructor's Note: Fall 2010 covered notes on multiple comparisons)
- Notes 8e Regression Multiple Comparisons (if needed)
- Notes 8f Regression with Two Qualitative Predictors
- Notes 8g Regression with Both Qualitative and Quantitative Predictors
Session 10 (10/29) (Instructor's Note: Fall 2010 covered notes on multiple comparisons and two qual IVs.)
- Resume where needed
- Notes 8h: Standardized Regression Equation (or this may be saved for end of course--will decide once we reach this point in semester)
Test 2 posted once regression completed, approximately 10/29
Session 11 (11/5)
- ANOVA: Notes 9 and 9b.
Session 12 (11/12)
- ANOVA: Notes 9 and 9b
- Notes 9c
November 19 -- No Class
Session 13 (11/26)
- Notes 9c
- Notes 9d: ANCOVA
Session 14 (12/3)
- Notes 9d
- Standardized regression coefficients
- Read Agresti text on standardized regression coefficients pages 270, 351-354, 529-532. Also, see my discussion in Notes 8a Regression with One Quantitative Predictor (see page 10) and Notes 8b Regression with Two Quantitative Predictors (also starting on page 10).
Session 15 (12/10)
Lost class session -- no class.
Test 3 posted sometime after 11/26
Test 3 due 12/10
NOTE -- Ignore Material below this point
Course Assessment Questionnaire
General Readings on ANOVA:
ANCOVA
Instructor's Note: add links to on-line statistical programs, e.g.
http://home.ubalt.edu/ntsbarsh/Business-stat/otherapplets/SampleSize.htm#rmenu
http://noppa5.pc.helsinki.fi/koe/flash/flash.html
Copyright 2005, Bryan W. Griffin
Last revised on 25 January, 2024 08:06 AM