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Andrew Bray
Andrew Bray

Assistant Professor of Statistics at Reed College

Andrew Bray is an Assistant Professor of Statistics at Reed College and lover of all things statistics and R.

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  • Nick Carchedi

    Nick Carchedi

  • Tom Jeon

    Tom Jeon

Course Description

When your dataset is represented as a table or a database, it's difficult to observe much about it beyond its size and the types of variables it contains. In this course, you'll learn how to use graphical and numerical techniques to begin uncovering the structure of your data. Which variables suggest interesting relationships? Which observations are unusual? By the end of the course, you'll be able to answer these questions and more, while generating graphics that are both insightful and beautiful.

  1. 1

    Exploring Categorical Data


    In this chapter, you will learn how to create graphical and numerical summaries of two categorical variables.

  2. Exploring Numerical Data

    In this chapter, you will learn how to graphically summarize numerical data.

  3. Numerical Summaries

    Now that we've looked at exploring categorical and numerical data, you'll learn some useful statistics for describing distributions of data.

  4. Case Study

    Apply what you've learned to explore and summarize a real world dataset in this case study of email spam.