Exploratory Data Analysis

Directions

Today we will demonstrate our understanding of exploratory data analysis using a dataset of crawdads measured in Grinnell, IA. In particular, we are interested in providing descriptive statistics that describe two associations:

1. Any associations between the physical characteristics (sex, weight, length) of crawdads
2. Any associations relating physical characteristics to the presence of injuries

The choice of variables to include is entirely up to you. You are welcome to explore the data as much as you wish, but your final report should only include the code and output that is relevant to your analysis.

You will complete this project with one partner and will submit a single document to gradescope upon completion. You may use any resources from the course website, your homework, or your labs, but you may not use any AI assistance.

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A successful report will include the following:

Graphical Summaries

• Two plots illustrating the relationship between variables you’ve chosen
• Plots should have appropriate labels for the axes and an appropriate title.
• A few sentences (2-3) describing any tables or figures

Numerical Summaries

• Provide an overview of the dataset such as the number of variables and observations
• Include at least one table along with a relevant statistic to measure association between categorical variables
• Turn one quantitative variable into a categorical variable (e.g., Size large or small)
• At least one grouped numerical summary using dplyr

General Information

• With all plots, tables, and written sentences, the final document shouldn’t exceed two pages (but it can be fewer)
• Don’t forget to add your name and your partner’s name at the top
• Please do not print out the entire data frame
• Finish with a few sentences indicating any associations you may have found (or didn’t find)

Once you are finished, Knit the document to a PDF and assess whether or not it looks and reads like something you would feel comfortable sending to a professional collaborator. Once you are satisfied with your document, submit it to Gradescope.

An Rmd template with the data and proper formatting is provided here.