EDUR 7130
Educational Research

Topic 4: Descriptive Statistics and Graphical Displays

1. Start Here: Summary Presentations

These written, and to-be-added video, presentations are equivalent to the content that would be discussed during a lecture with a face-to-face class. I don't cover all content in detail here, but I do cover the important points and topics likely to appear on course tests. These presentations are streamlined summaries. See links further below for detailed readings, if needed.

• Summary Presentation 4a: Descriptive Statistics (video 4a)
• Summary Presentation 4b: Graphical Displays (video 4b)

2. Detailed Presentations

If the Summary Presentations above did not provide the detail needed to help you understand the content or answer test questions, please have a read of the more detailed notes below.

• Descriptive Statistics, and Graphical and Tabular Displays
• Practice exercise for displaying data
• Correlation: Correlation Coefficients and Scatterplots
  • Supplemental: Descriptive Statistics
• If you don't have Excel, note that as a GSU student, you have free access to Microsoft Office:
  • https://its.georgiasouthern.edu/software-downloads/office-365/
• Supplemental Textbook
  • Borg et al.(6th, 7th, and 8th edition): Chapter 5
  • or Fraenkel et al.(7th, 8th, and 9th edition): Chapter 10
  • or Cohen et al. (8th edition): Chapter 38 and 40

Topic 5a and 5b:  Hypothesis Testing and Inferential Statistics

1. Start Here: Summary Presentations

These written, and to-be-added video, presentations are equivalent to the content that would be discussed during a lecture with a face-to-face class. I don't cover all content in detail here, but I do cover the important points and topics likely to appear on course tests. These presentations are streamlined summaries. See links further below for detailed readings, if needed.

• Summary Presentation 5a: Hypothesis Testing (video 5a)
• Summary Presentation 5a1: p-values (to be added)
• Summary Presentation 5b: Inferential Statistics (video 5b Part 1 with Pearson r and t-test,  and video 5b Part 2 with ANOVA, ANCOVA and chi-square)

2. Detailed Presentations

If the Summary Presentations above did not provide the detail needed to help you understand the content or answer test questions, please have a read of the more detailed notes below.

• Inferential Statistics and Practice Exercise
• Supplemental
  • Statistical Significance Testing
  • Type 1 and 2 Errors in Hypothesis Testing
• Supplemental Textbook
  • Borg et al.(6th, 7th, and 8th edition):
    • 6th edition: Chapter 5; and pages 389-403; 409-432; 456-459
    • 7th edition: Chapter 5; and pages 304-316; 320-339; 360-363 
    • 8th edition: Chapter 5; and pages 315-328; 332-352; 375-377
  • or Fraenkel et al.(7th, 8th, and 9th edition): Chapters 11 and 12
  • or Cohen et al. (8th edition): Chapters 38, 39, 41 and review 40.5 for correlation

Topic 5c:  Two-group t-test

1. Start Here: Summary Presentation

• Summary Presentation 5c: Independent t-test (video 5c)
• If you prefer using Google Sheets rather than Excel: Video - Using t-test spreadsheet in Google Sheets

2. Detailed Presentation

If the Summary Presentations above did not provide the detail needed to help you understand the content or answer test questions, please have a read of the more detailed notes below.

• Two group t-test
  • Excel Spreadsheet for t-test (if needed, I can provide Google sheet version if Excel does not work for you)
  • Exercises for t-test
  • If you don't have Excel, note that as a GSU student, you have free access to Microsoft Office:
    • https://its.georgiasouthern.edu/software-downloads/office-365/

Topic 5d:  Pearson Correlation

1. Start Here: Summary Presentation

Summary Presentation 5d: Pearson Correlation (video 5d)

2. Detailed Presentation

If the Summary Presentations above did not provide the detail needed to help you understand the content or answer test questions, please have a read of the more detailed notes below.

• Pearson Correlation
  • Excel Spreadsheet for Pearson r (if needed, I can provide Google sheet version if Excel does not work for you)
  • Exercises for Pearson r
  • If you don't have Excel, note that as a GSU student, you have free access to Microsoft Office:
    • https://its.georgiasouthern.edu/software-downloads/office-365/