Universiteit Leiden

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R introduction

An introduction course to data analysis in R.

Target group
Lecturer
Researcher
PhD candidate
Teachers
Gabriel Castellar Barroso  (Lecturer) Sjoerd Huisman  (Assistant professor)
Method
Training course

Deadline registration: 20 June 2025

Course description

The focus of this course is on teaching R, not statistical theory. So the analyses are limited to first-year BSc materials. Participants can attend any 1, 2, or 3 days if they have sufficient knowledge to do so.

The topics are:

Day 1

  • Basic commands and data types in R
  • Using existing functions and external packages
  • Loading data files
  • Making selections and calculating summary statistics
  • Using scripts and projects

Day 2 (required knowledge: topics of day 1)

  • More data manipulation in R
  • Making plots for various variable types
  • Performing uni- and bivariate statistical tests and viewing their output (chi-squared, correlation, and t-tests)

Day 3 (required knowledge: topics of day 1 and 2)

  • Writing functions and applying them
  • More plotting
  • Performing multivariate statistical tests and viewing their output (linear regression, ANOVA)
  • Beyond the basics: some data simulation

Please bring your own laptop, with a working installation of R and Rstudio (see starting-up instructions).

Mode of instructions

There will be a document with starting-up instructions about installing R and Rstudio. Participants are required to bring their own laptops with this software installed in Windows / macOS / Linux.

The course consists of a mix of lectures, demonstrations and doing exercises.

Reading List

Please read and complete the starting-up instructions. Materials are shared on Brightspace.

Entry requirements

The course requires: computer skills related to installing software and saving and organising files in folders (File Explorer / Finder); and statistical knowledge as taught in the first year BSc Psychology.

Questions?

Contact Sjoerd Huisman: s.m.h.huisman@fsw.leidenuniv.nl.

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