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Criterion:

Mean:

Variance:

This may take some time.

Result

Prior distribution of θ

Criterion:

Mean:

Variance:

Number of successes:

Sample size:

Credible Interval

Posterior distribution of θ

Criterion:

Mean (Group 1):

Variance (Group 1):

Mean (Group 2):

Variance (Group 2):

Result

Prior distribution of θ₁ − θ₂

Criterion:

Mean (Group 1):

Variance (Group 1):

Successes (Group 1):

Sample size (Group 1):

Mean (Group 2):

Variance (Group 2):

Successes (Group 2):

Sample size (Group 2):

Credible Interval for θ₁ − θ₂

Posterior distribution of θ₁ − θ₂

About:

This is a Shiny app in R language to compute Bayesian sample size for binomial proportions developed by Makson Rodrigues under supervision of Prof. Eliardo Costa. For more details about the methodology, see the references below.

Acknowledgements:

PROPESQ/UFRN for the Undergraduate Research Grant and Marcus A. Nunes (https://marcusnunes.me/) for the hosting of the app in the UFRN domain.

References:

Costa, E. (2025). bssbinom: Bayesian Sample Size for Binomial Proportions. R package version 1.0.0. https://doi.org/10.32614/CRAN.package.bssbinom

Costa, E. G. (2025). Bayesian Sample Size for Binomial Proportions with Applications in R. In: Awe, O.O., A. Vance, E. (eds) Practical Statistical Learning and Data Science Methods. STEAM-H: Science, Technology, Engineering, Agriculture, Mathematics & Health. Springer, Cham. https://doi.org/10.1007/978-3-031-72215-8_14.

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Result

Prior distribution of θ

Credible Interval

Posterior distribution of θ

Result

Prior distribution of θ₁ − θ₂

Credible Interval for θ₁ − θ₂

Posterior distribution of θ₁ − θ₂

About:

This is a Shiny app in R language to compute Bayesian sample size for binomial proportions developed by Makson Rodrigues under supervision of Prof. Eliardo Costa. For more details about the methodology, see the references below.

Acknowledgements:

PROPESQ/UFRN for the Undergraduate Research Grant and Marcus A. Nunes (https://marcusnunes.me/) for the hosting of the app in the UFRN domain.

References:

Costa, E. (2025). bssbinom: Bayesian Sample Size for Binomial Proportions. R package version 1.0.0. https://doi.org/10.32614/CRAN.package.bssbinom

Contact:

Makson Pedro Rodrigues

✉ maksonpedro@gmail.com

Eliardo Guimarães da Costa

✉ eliardo.costa@ufrn.br