09 - Comparing two means, paired data and independent groups (Nov. 2-8)
Comparison of Means
Learning Objectives
- Discuss the goal of a matched pairs design and provide an example.
- Describe an independent groups design and specifically how it differs from matched pairs. Give an example.
- Be able to make inference for both the difference in means for matched pairs and independent samples.
- Discuss the appropriate times to use a pooled variance. What does a pooled variance assume about the population variances?
Videos & Video Lectures
- Lesson 8 Introduction: "Comparing Two Means - Paired Data" Links to an external site. (1 minute)
- Lesson 8.1 Links to an external site. (14 minutes)
- Lesson 8.2 Links to an external site. (17 minutes)
- Lesson 8.3 Links to an external site. (12minutes)
- Lesson 9 Introduction: "Comparing Two Mean - Independent Groups Links to an external site." (1 minute)
- Lesson 9.1 Links to an external site. (17 minutes)
- Lesson 9.2 Links to an external site. (21 minutes)
- Lesson 9.3 Links to an external site. (15 minutes)
Readings
- IPS Text Chapter 7.2
- BIA: CAST Trial Download CAST Trial (for discussion 11/02), consider BIA questions Download BIA questions
Assignments
- Due Nov. 6: Homework #8
- Due Nov. 10: Lab #8
Required Online Adobe Connect Sessions
- Wednesday, Nov. 2, 7-8:20 pm ET - Happy Hour with Rod Little
- Review Week 8, Homework Q&A, Preview Week 9, BIA CAST Trial
- Week 9 Happy Hour recording
- Monday, Nov. 7, 7-8:20 pm ET - Lab Connect meeting with Swastina Shrestha
- Week 9 Lab Connect recording
- Week 9 Office Hour recording
Powerpoint Slides
- Lesson #8 video lecture slides Download lecture slides
- Lesson #9 video lecture slides Download lecture slides
- Happy Hour slides
- Lab slides
Additional Resources
- View Worked Example 9
- Example 9a Links to an external site.
- Example 9b Links to an external site.
- Example 9c Links to an external site.
- Example 9d Links to an external site.
- Knowledge Check Links to an external site.
- Practice quizzes, vocabulary flashcards, statistical applets