July 2015
Beginner to intermediate
432 pages
9h 15m
English
Content preview from R For Dummies, 2nd Edition
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Chapter 4
Getting Started with Arithmetic
In This Chapter
Using R as a fancy calculator
Constructing and working with vectors
Vectorizing your calculations
Statistics isn’t called applied mathematics just for the fun of it. Every statistical analysis involves a lot of calculations, and calculation is what R is designed for — the work that R does best.
R goes far beyond employing the classic arithmetic operators. It also contains sets of operators and functions that work on complete vectors at the same time. If you’ve read Chapter 3, you’ve gotten a first glimpse into the power of vectorized functions. In this chapter, you discover the full power of vectorization, using it to speed up calculations and perform complex tasks with very little code.
We can’t possibly cover all of R’s mathematical functions in one chapter — or even in one book — so we encourage you to browse the Help files and other sources when you’re done with this chapter. You can find search tips and a list of interesting sources in Chapter 11.
Working with Numbers, Infinity, and Missing Values
In many low-level ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.