Comparing Groups: Numerical Variables
Practical Statistics in R
Alboukadel Kassambara
A book-length lesson series
Comparing Groups: Numerical Variables
Practical Statistics in R
Is the difference real? Run the right test the right way — t-tests, effect sizes, and non-parametric alternatives.
5 chaptersruns in your browser
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You already run his code
Alboukadel Kassambara wrote the R packages a generation of data scientists reach for — ggpubr, factoextra, survminer, rstatix, ggcorrplot. More than 50 million installs. This book is the source.
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Frequently asked questions
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- Yes. Every chapter is a free, runnable lesson online — the complete book, no paywall on understanding. Pro adds the offline typeset PDF/ePub, Prova on your own data, certificates, and more.
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- The offline PDF is a Pro perk, not sold on its own. If you want a single-book, one-time purchase, the ebook is available on Kindle. Everything else lives in Pro.
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