Problem Set 3

Important

Due September 22nd at 10:30 am on Canvas

Problem Set 3 is posted on Canvas. You must use the provided RMarkdown file to complete this problem set.

• Use the RMarkdown file provided (.Rmd extension) and write your answers and code in the spaces provided. Submit the PDF that is “knitted” (1 file).¹

If you have any issues using RMarkdown please see me in my office so we can make sure you can knit the file on your computer.

Files

1. Problem Set - PDF
2. RMardown file

Purpose

This third problem set will help you practice:

1. Setting the working directory
2. Loading data into R
3. Computing and interpreting the mean of a variable for different subsets of a sample
4. Estimating the average treatment effect for a randomized experiment

You will use the following commands:

# From the previous problem sets
setwd()

read.csv()

mean()

# New in this problem set

# Subsetting data; for example:
data$var1[data$var2==1]

Criteria for success

In addition to providing the correct code and/or answer, a successful problem set will:

1. Have clear explanations that demonstrate your knowledge of the material
2. Use the “comment out” function to explain what the code is doing

Footnotes

1. This route requires a few more tools. You need to install RMarkdown and TinyTeX. The upside? You can produce beautiful documents that show your code and output.