Join Barton Poulson for an in-depth discussion in this video Recoding variables, part of Learning R.
When you've taken a thorough look at your variables, you may find that some of…them may not be in the most advantageous form after your analyses.…Some of them may require, for instance, rescaling to be more interpretable.…Others may require transformations, such as ranking, logarithms, or…dichotomization to work well for your purposes.…In this movie, we're going to look at a small number of ways that you can…quickly and easily recode variables within R. For this one, we're going to be…using the data set we've used before, social network, and I'm going to load that…by simply running a line 12 here.…
And then I'm going to be using the psych package, because it gives me some…extra options for what I want to do here.…So, I'm going to run line 15 to install it, and then run line 16 to load it.…Now, what I'm going to do right here is I'm going to first take a look at…the variable times; the number of times that people say they log in to their site each week.…The easiest way to do this is with a histogram, because it's a…
The course continues with examples on how to create charts and plots, check statistical assumptions and the reliability of your data, look for data outliers, and use other data analysis tools. Finally, learn how to get charts and tables out of R and share your results with presentations and web pages.
- What is R?
- Installing R
- Creating bar character for categorical variables
- Building histograms
- Calculating frequencies and descriptives
- Computing new variables
- Creating scatterplots
- Comparing means
Skill Level Beginner
Managing and Analyzing Data in Excel 2010with Dennis Taylor1h 32m Appropriate for all
1. What is R?
R in context3m 35s
2. Getting Started
3. Charts and Statistics for One Variable
4. Modifying Data
5. Charts for Associations
6. Statistics for Associations
Next steps4m 11s
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