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Master the programming language of choice among statisticians and data analysts worldwide Coming to grips with R can be tough, even for seasoned statisticians and data analysts. Enter R For Dummies, the quick, easy way to master all the R you'll ever need. Requiring no prior programming experience and packed with practical examples, easy, step-by-step exercises, and sample code, this extremely accessible guide is the ideal introduction to R for complete beginners. It also covers many concepts that intermediate-level programmers will find extremely useful. Master your R ABCs get up to speed in no time with the basics, from installing and configuring R to writing simple scripts and performing simultaneous calculations on many variables Put data in its place get to know your way around lists, data frames, and other R data structures while learning to interact with other programs, such as Microsoft Excel Make data dance to your tune learn how to reshape and manipulate data, merge data sets, split and combine data, perform calculations on vectors and arrays, and much more Visualize it learn to use R's powerful data visualization features to create beautiful and informative graphical presentations of your data Get statistical find out how to do simple statistical analysis, summarize your variables, and conduct classic statistical tests, such as t-tests Expand and customize R get the lowdown on how to find, install, and make the most of add-on packages created by the global R community for a wide variety of purposes Open the book and find: Help downloading, installing, and configuring R Tips for getting data in and out of R Ways to use data frames and lists to organize data How to manipulate and process data Advice on fitting regression models and ANOVA Helpful hints for working with graphics How to code in R What R mailing lists and forums can do for you

Introduction 1
Part I: R You Ready? 7
Chapter 1: Introducing R: The Big Picture 9
Chapter 2: Exploring R 15
Chapter 3: The Fundamentals of R 31

Part II: Getting Down to Work in R 43
Chapter 4: Getting Started with Arithmetic 45
Chapter 5: Getting Started with Reading and Writing 71
Chapter 6: Going on a Date with R 93
Chapter 7: Working in More Dimensions 103

Part III: Coding in R 137
Chapter 8: Putting the Fun in Functions 139
Chapter 9: Controlling the Logical Flow 159
Chapter 10: Debugging Your Code 179
Chapter 11: Getting Help 193
Part IV: Making the Data Talk 203
Chapter 12: Getting Data into and out of R 205
Chapter 13: Manipulating and Processing Data 219
Chapter 14: Summarizing Data 253
Chapter 15: Testing Differences and Relations 275

Part V: Working with Graphics 299
Chapter 16: Using Base Graphics 301
Chapter 17: Creating Faceted Graphics with Lattice 317
Chapter 18: Looking At ggplot2 Graphics 333

Part VI: The Part of Tens 347
Chapter 19: Ten Things You Can Do in R That You Would've Done in Microsoft Excel 349
Chapter 20: Ten Tips on Working with Packages 359
Appendix: Installing R and RStudio 365
Index 371
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