R/RStudio
Say goodbye to SPSS!
R
R is a programming language and environment commonly used for statistical analyses and graphics. R is free, easy to use, and open-source - meaning that the original source code is visible and easily modified. R is available for Mac, Windows, and Linux.

Download R here: https://cran.r-project.org/
RStudio
RStudio: While R can be used in its own console, RStudio provides a cleaner and more organized means of using R effectively. You must download R in order to use RStudio. RStudio is also free, and is available for Mac, Windows, and Linux.

Download RStudio here: https://rstudio.com/products/rstudio/download/
Interested in learning R? Here are several online platforms to get you started!
edX.org: edX is an incredible resource offering FREE online classes taught by prestigious professors from Harvard, MIT, UC Berkeley, Boston University, and more! Most classes are self-taught through pre-recorded video lectures, but also include discussion forums to submit questions about lessons and assignments. The workload for the R Basics course is 1-2 hours/week. Find the R Basics course here: https://www.edx.org/course/data-science-r-basics
DataCamp.com: Another great free online resource to learn programming. Learn R at your own pace and complete interactive coding exercises to practice what you've learned. Explore DataCamp here: https://www.datacamp.com/onboarding
Harvard University Online Learning: Many of these courses are available on edX. Find Harvard's data science courses here: https://online-learning.harvard.edu/subject/r
coursera.com: Another great resource to learn R. The intro R course is taught by professors at Johns Hopkins, and requires ~10hrs of work per week. Sign up here: https://www.coursera.org/learn/r-programming
R Cookbook: Stuck? The R Cookbook is a great how-to guide that helped me to survive HD 4750. You can find the R Cookbook here: http://www.cookbook-r.com/
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