Difference in Differences Workshop

UNSW Data Science Hub

Authors

Nils Wlömert

Daniel Winkler

Published

February 21, 2023

Preliminaries

This tutorial uses the R statistical software (R Core Team 2022) and assumes you have a recent version with the standard packages loaded (this is the case in a fresh installation without modifications).

Code

library(ggplot2)
library(psych)
library(data.table)
library(tidyverse)
options(scipen = 999)
# panel data models
#-------------------------------------------------------------------
# load data
music_data <- fread("https://raw.githubusercontent.com/WU-RDS/RMA2022/main/data/music_data.csv")
# convert to factor
music_data$song_id <- as.factor(music_data$song_id)
music_data$genre <- as.factor(music_data$genre)
music_data