Privacy Policy for Advertisements

This site uses advertising from Media.net. This service delivers individualized ads, and may use cookies. It does not collect personally identifiable information. Media.net adheres to the Digital Advertising Alliance (DAA) Self-Regulatory Principles, and complies with the General Data Protection Regulation (GDPR).

You may opt out or change your ad preference settings by visiting Media.net Ad Choices.

I have noticed that these ads may ask Firefox on Android to ask for permissions to record audio or take photos. I don't know why this happens, but these requests can be denied, and the selection remembered, so that the user isn't prompted again.

Proceeds from these ads go to support education and research activities, including the improvement of this site.

Non-commercial reproduction of this content, with attribution, is permitted.
For-profit reproduction without permission is prohibited.

If you use the code or information in this site in a published work, please cite it as a source. Also, if you are an instructor and use this book in your course, please let me know. My contact information is on the About the Author of this Book page.

Citation

Mangiafico, S.S. 2016. Summary and Analysis of Extension Program Evaluation in R, version 1.20.05, revised 2023. rcompanion.org/handbook/. (Pdf version: rcompanion.org/documents/RHandbookProgramEvaluation.pdf.)