ANCOVA

BEFORE YOU BEGIN:

The videos below will walk you through the following .Rmd file: https://drive.google.com/file/d/1Xfo84VA8Dp1RhmyrUsBM_I-5hjmlytz_/view?usp=sharing

Here is another dataset you will need to perform the ANCOVA: https://drive.google.com/file/d/19FtsxVqYjyUVukxPA6wgxd7itZ1ZZjoU/view?usp=sharing

Be sure you already have the datafile from Ch. 9 saved.

TABLE OF CONTENTS:

21-A: Introduction and Learning Outcomes

21-B: Installing/ Loading Packages and Dataset Information

21-C: ANOVA vs. ANCOVA

21-D: Research Questions and Hypotheses

21-E: ANCOVA Assumptions

21-F: A True Co-variate Example

21-G: True Co-variate Research Question and Hypotheses

21-H: True Co-variate ANCOVA Assumptions

21-I: Analysis and Interpretation

.Rmd Analysis Template

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21-A: Introduction and Learning Outcomes

Video (0:48)

21-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 (11:57)

21-C: ANOVA vs. ANCOVA

Video (1:47)

21-D: Research Questions and Hypotheses

Video (2:53)

21-E: ANCOVA Assumptions

Video (18:26)

21-F: A True Co-variate Example

Video (4:49)

21-G: True Co-variate Research Question and Hypotheses

Video (1:29)

21-H: True Co-variate ANCOVA Assumptions

Video (9:14)

21-I: Analysis and Interpretation

Video (3:36)

.Rmd Analysis Template

https://drive.google.com/file/d/199eiRdt97WCTIK-vzaJMSnuU52svskgZ/view?usp=sharing

References

Cover image from Flickr user theilr. License CC-BY-SA 2.0
Tomlinson, T. Jones, B. and Chicoli, A.Statistics in Social Sciences https://sites.google.com/umd.edu/statisticsinsocialsciences

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