2022
DOI: 10.5964/meth.9263
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Bayesian tests of two proportions: A tutorial with R and JASP

Abstract: The need for a comparison between two proportions (sometimes called an A/B test) often arises in business, psychology, and the analysis of clinical trial data. Here we discuss two Bayesian A/B tests that allow users to monitor the uncertainty about a difference in two proportions as data accumulate over time. We emphasize the advantage of assigning a dependent prior distribution to the proportions (i.e., assigning a prior to the log odds ratio). This dependent-prior approach has been implemented in the open-so… Show more

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Cited by 2 publications
(2 citation statements)
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“…Recent advancements in JASP have expanded its utility, particularly in terms of Bayesian analysis. Tutorials have been developed to guide users in applying Bayesian methods to specific statistical tests, such as single-test reliability analysis (Pfadt, 2022), tests of two proportions (Hoffmann et al, 2022), and Bayesian model-averaged meta-analysis (Berkhout et al, 2023). These resources are invaluable for those new to Bayesian methods, offering clear, step-by-step guidance, in a user-friendly software such as JASP.…”
Section: Statistical Analysis In Studying L2 Learning Phenomenamentioning
confidence: 99%
“…Recent advancements in JASP have expanded its utility, particularly in terms of Bayesian analysis. Tutorials have been developed to guide users in applying Bayesian methods to specific statistical tests, such as single-test reliability analysis (Pfadt, 2022), tests of two proportions (Hoffmann et al, 2022), and Bayesian model-averaged meta-analysis (Berkhout et al, 2023). These resources are invaluable for those new to Bayesian methods, offering clear, step-by-step guidance, in a user-friendly software such as JASP.…”
Section: Statistical Analysis In Studying L2 Learning Phenomenamentioning
confidence: 99%
“…To obtain the distribution of this difference, we can calculate the difference between posterior distributions. This difference distribution can help us answer probability questions about the difference in effects between experimental groups, such as the probability that version A is more effective than version B (Hoffmann et al, 2022).…”
Section: Ability To Handle Multiple Experimental Groupsmentioning
confidence: 99%