Statistics for Agriculture
R is an integrated suite of software for statistics and graphical display.
Moving Beyond the Mean – A Critical Look at Statistics and Agriculture
PDF version of a powerpoint presentation given at the 2011 Illinois AgMasters conference
Introduction to R – a workshop conducted at the 2010 American Phytopathological Society (APS) meeting
R is a a free software environment for statistical computing and graphics. It provides a variety of statistical techniques such as linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, and clustering, as well as publication-quality plots and graphical display.
R is available as Free Software under the terms of the Free Software Foundation’s GNU General Public License. It runs on Windows, MacOS, and a wide variety of UNIX platforms and similar systems.
- Introductory material - This pdf document explains how to obtain R for different operating systems.
- An Introduction to R – complete materials from the 2010 workshop (6.7 MB pdf)
- Example data sets for working with R (MS-Excel format): Example 1, Example 2 ,Weather data
Links
R Project – introduction to the software, download the software
An Introduction to R (pdf)
R Data Import/Export (pdf)
Using R for Data Analysis and Graphics (pdf)
R Fundamentals and Programming Techniques (pdf)
Quick R for SAS, SPSS, or Stata Users
Mixed Models for Data Analysis in Plant Pathology – workshop materials presented by Ohio State University
