Two–Way ANOVA
BEFORE YOU BEGIN:
The videos below will walk you through the following .Rmd file: https://drive.google.com/file/d/1GtaLdzjsTil_iiF8dTg6P6SP118jlsVy/view?usp=sharing
Data for our second follow study: https://drive.google.com/file/d/1O-QTZa0uGrBXKGozoaSpyULMSIty4r05/view?usp=sharing
Be sure you already have the datafile from Ch. 9 saved.
TABLE OF CONTENTS:
20–A: Introduction and Learning Outcomes
Video (0:46)
20–B: Installing/ Loading Packages and Dataset Information
Note that when working through the .Rmd files, R packages will often need to be installed, and libraries loaded. Do NOT quit R while installing or loading packages and libraries. This can corrupt crucial files. Instead, you can STOP the process (by clicking the red stop sign in the upper right corner of the console) and then quit the program, or wait until the process has been completed.
Video (9:45)
20–C: Research Questions and Hypotheses
Video (3:48)
20–D: Assessing Your Data
During the assessment of our data, we uncover a problem in our initial design and need to run another study!
You can find the data from the second study here: https://drive.google.com/file/d/1O-QTZa0uGrBXKGozoaSpyULMSIty4r05/view?usp=sharing
Video (14:52)
20–E: Two-Way ANOVA Assumptions
Video (6:09)
20–F: Analysis and Interpretation
Video (3:46)
20–G: What If You Have a Significant Interaction?
Video (2:04)
20–H: Moving Forward Without a Significant Interaction
Video (4:44)
20–I: Effect Sizes
Video (4:14)
20–J: Post-Hoc Analyses
Video (6:23)
20–K: Final Write-Up
Video (5:28)
20–L: Depicting the Results of Two-Way ANOVA Visually
Video (5:55)
Rmd Analyses Template
https://drive.google.com/file/d/1UX0E7RrIjT3NWLBKi51JX53NWs0sBiZ3/view?usp=sharing
References
Tomlinson, T. Jones, B. and Chicoli, A.Statistics in Social Sciences https://sites.google.com/umd.edu/statisticsinsocialsciences