This OSF page contains open materials and data for the article "When “Sometimes” Means “Often”: How Stereotypes Affect Interpretations of Quantitative Expressions", authored by Camiel J. Beukeboom, Jesper van der Meer (both Vrije Universiteit Amsterdam, the Netherlands) & Christian Burgers (University of Amsterdam), published in the *Journal of Language & Social Psychology* (accepted October, 2023). This page contains a PDF file and two folders. The PDF file (DEF Appendices Stereotypes and quantitative expressions OSF) contains the online Appendix reporting power analysis and sample information and the complete methodology of both studies. Study 1 is in Dutch language, Study 2 is a direct preregistered replication of Study 1 in English language. The preregistration for Study 2 can be found under the Registrations tab of this OSF project and here: https://doi.org/10.17605/OSF.IO/EW3M7 The Data and syntax folders (Study 1 and Study 2) contain the data files and syntax of the two reported experiments. The datafiles (DEF DATA stereotypes frequency expresssions OSF) are .sav file, which means that they can be opened with SPSS. For our analyses, we used IBM SPSS Statistics, Version 27 for Mac (64-bit version). The syntax file (DEF Syntax stereotypes frequency expresssions OSF.sps) contains the SPSS syntax code we used to run the analyses with the experiments reported in the article and appendix.