Deadline: April 27, 2026 11:59 PM

Necessary Reading

Chang 2012 - Chapter 10.pdf

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Use of AI tools in this assignment is strictly prohibited. I will be carefully checking submissions for any evidence of AI assistance, including stylistic similarities and overlap across student work. Any indication of unauthorized AI use will be treated as a violation of academic integrity rules.

</aside>

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The relevant lecture notes are available on Canvas.

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Project Setup

You are required to work within an R Project (.Rproj). This is not optional.

Using an R Project ensures:

• Your working directory is set automatically
• Your code runs the same way on any machine
• Your project is fully reproducible

Required Folder Structure

Before writing any code, create the following structure:

pset1_name_surname/
│
├── pset1_name_surname.Rproj
├── analysis.R
│
├── input_data/
│   ├── gdp_percapita_ppp_1990_2024.xlsx
│   └── hdi_2023.xlsx
│
└── outputs/

If you don’t follow this structure, your code will likely break when graded.

Datasets Provided

You are given two datasets:

1. GDP per capita dataset

gdp_percapita_ppp_1990_2024.xlsx

File: gdp_percapita_ppp_1990_2024.xlsx