SampleSizePlanner: A Tool to Estimate and Justify Sample Size for Two-Group Studies

Marton Kovacs*, Don van Ravenzwaaij, Rink Hoekstra, Balazs Aczel

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

20 Downloads (Pure)


Planning sample size often requires researchers to identify a statistical technique and to make several choices during their calculations. Currently, there is a lack of clear guidelines for researchers to find and use the applicable procedure. In the present tutorial, we introduce a web app and R package that offer nine different procedures to determine and justify the sample size for independent two-group study designs. The application highlights the most important decision points for each procedure and suggests example justifications for them. The resulting sample-size report can serve as a template for preregistrations and manuscripts.
Originele taal-2English
Aantal pagina's10
TijdschriftAdvances in Methods and Practices in Psychological Science
Nummer van het tijdschrift1
StatusPublished - feb-2022

Citeer dit