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R For SAS Users

Learn how to translate your SAS knowledge into R and analyze data using this free and powerful software language.

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4 Hours15 Videos56 Exercises2,246 Learners4700 XP

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Course Description

If you have experience with SAS and want to learn R, this is the course for you. R is FREE (cost) and OPEN (license) and is one of the fastest growing software languages for statistics and data science. This course is a gentle introduction to the R language with every chapter providing a detailed mapping of R functions to SAS procedures highlighting similarities and differences. You will orient yourself in the R environment and discover how to wrangle, visualize, and model data plus customize your output for final presentation. Throughout the course, you will follow a consistent workflow of data quality checking and cleaning, exploring relationships, modeling, and presenting results. You will leave this course with coded examples that provide a template to use immediately with a dataset of your own.

  1. 1

    Getting Started with R


    This first chapter will get you oriented into the R programming environment. You'll learn how to get help, load a dataset, and increase functionality by adding packages. You'll begin working with the abalone dataset (through the dplyr package workflow) to get descriptive statistics and create helpful visualizations (using the ggplot2 package).

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    Get help and load data in R
    50 xp
    Getting help
    50 xp
    Load dataset and get details
    100 xp
    Add functionality with packages
    100 xp
    Dataset contents and descriptive statistics
    50 xp
    Load external dataset
    100 xp
    Dataset contents
    100 xp
    Descriptive statistics
    100 xp
    Graphical visualizations
    50 xp
    100 xp
    Boxplots and violin plots
    100 xp
    100 xp
  2. 2

    Data Wrangling

    Now that you are oriented in the R environment, this chapter will advance your understanding of R's versatility working with data objects. You'll learn how to create and modify variables in the abalone data set. Using your ggplot2 visualization skills, you will discover the data errors in the abalone data and then create a final cleaned data set ready for analysis and modeling.

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  3. 3

    Data Exploration

    Once your data set has been cleaned, the next step is exploration. In chapter 3 you will learn how to compute descriptive statistics, explore associations (e.g., correlations) among the variables, and perform bi-variate statistical tests (e.g., t-tests and chi-square tests). You will also create graphical visualizations which illustrate the bi-variate associations and group comparison tests.

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  4. 4

    Models and Presentation

    In this final chapter, you will learn how to work with one of the most versatile data object types in R called a list. These skills will enable you to save and manipulate your output from descriptive statistics, associations, and group comparison computations. You will also learn how to perform ANOVA (analysis of variance) and linear regression in R. All your skills are put to use in the final exercises to create the best models for predicting abalone ages from their sex, size, and weight measurements.

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richieRichie Cottonsara-billenSara Billen
Melinda Higgins Headshot

Melinda Higgins

Research Professor, Senior Biostatistician

Melinda Higgins, PhD @mhiggins2000 is an avid R user, advocate and instructor. She originally learned S and then transitioned to R in the mid 1990's. She has over 25 years experience as a research scientist and statistician. She has a PhD in Chemometrics (applied pattern recognition in Chemistry) and a MS in Statistics (with a focus in experimental design). She enjoys teaching courses in biostatistics and leading workshops on statistical programming using SAS, SPSS, R, the RStudio IDE and Rmarkdown. She is also the co-founder of R-Ladies Atlanta, GA.
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