LSM - Sample Size Calculation using GPower (3-4 hours)

LSM - Sample Size Calculation using GPower (3-4 hours)

Target audience: PhD students and Post-Docs.

Place: Jette campus, Informatica lokaal 2

Date/Time: 31th January 2018 (13:00-17:00)


Format:instructor-led presentation, peer-to-peer exercises

Language of instruction: English

Max. participants: 22

Instructor:Wilfried Cools (UMC medewerker)

Sample size calculation is necessary to determine how many datapoints are needed to make a correct decision on the outcome of a specific experiment (either in vitro or in vivo). This workshop aims to introduce researchers to this essential topic of sample size calculations. Concepts related to sample size like power, effect sizes, and error types are discussed and exemplified using the free software tool GPower. Small exercises with GPower will challenge participants to reason with these concepts and offer relevant practice.

Completion of this workshop will allow participants to do sample size calculations themselves using GPower for simple but common research settings. 

It will also prepare participants for a more advanced workshop on sample size derivation in the future.


If you want to use your own device; GPower should be downloaded and ready to use on your laptop. PC with GPower installed will be provided.

Download G*Power for Windows XP, Vista, 7, 8, and 10 (about 20 MB) here. Please make sure to choose “unpack with folders” in your unzip tool.

Download G*Power for Mac OS X 10.7 to 10.13 (about 2 MB) here.



Register HERE

Priority will be given to PhDs and Post-docs of the VUB, but others interested can apply as well.


We kindly ask you to register only once and only when you can actually participate. In case you have already registered but are not able to participate, please be so kind as to notify us by sending an e-mail to lsm [at] vub [dot] ac [dot] be so we can offer your place to one of your PhD/Post-doc colleagues on the waiting list.

Please be aware of the fact that the cancellation and no-show policy of VUB applies. Cancellation of your participation is only allowed up to 48 hours before the start of the course. Otherwise, the policy as described on the doctoral school website will be followed.

Registration Rules:
No Show Policy: