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Section 6.1 Introduction

In some situations, we do not have numerical data, and only categorical data. What do we do then? There are no meaningful measures of central tendency like the mean, median, or mode. We can’t make a scatterplot, or run a correlation matrix, or other techniques we have covered in this textbook so far.
In situations like these, when we only have categorical values, we undergo a Categorical Analysis. Today, we will be looking at three different treatment options aimed at inhibiting infections.

In this lesson, the question we are trying to answer is:.

Does the type of treatment people get affect whether they get an infection?
We’ll use a dataset called infection_treatments. Each row is a unique participant, indicating what treatment method they utilized, and if they became infected or not.