SORT (Statistics and Operations Research Transactions) —formerly Qüestiió— is an international Open Access journal launched in 2003 and distributed in printed form as well as in digital form online. From 2024 it will be published in digital form only. SORT does not charge publication fees. It is published twice-yearly, in English, by the Statistical Institute of Catalonia (Idescat). The journal is co-edited by the Universitat Politècnica de Catalunya, Universitat de Barcelona, Universitat Autonòma de Barcelona, Universitat de Girona, Universitat Pompeu Fabra, Universitat de Lleida and Universitat Rovira i Virgili, with the co-operation of the Spanish Section of the International Biometric Society,  the Catalan Statistical Society and the Ministry of Research and Universities. SORT promotes the publication of original articles of a methodological or applied nature or motivated by an applied problem in statistics, operations research, official statistics or biometrics as well as book reviews. We encourage authors to include an example of a real data set in their manuscripts.