This app visualizes the Vovk-Sellke maximum p-ratio: the maximum diagnosticity of a two-sided *p*-value (Vovk, 1993;
Sellke et al., 2001). For example, a *p*-value of .05 (“reject the null”) is only 2.46 times more likely under the *best* H₁ than under H₀. The Vovk-Sellke ratio is available in the free statistical software package JASP.

References:

- Vovk, V. G. (1993). A logic of probability, with application to the foundations of statistics.
*Journal of the Royal Statistical Society Series B, 55*, 317-351. - Sellke, T., Bayarri, M., and Berger, J. O. (2001). Calibration of
*p*values for testing precise null hypotheses.*The American Statistician, 55*, 62-71.