Suspected incorrect usage of the `erf` function

I've put uniform distribution into `erf` to get normal distribution, but it looks like I made a mistake and should use negative to erf function: https://en.wikipedia.org/wiki/Quantile_function

No file or test is named. Start by locating the SQL expression that uses `erf`, then compare its intended normal-distribution behavior with the linked quantile-function reference. Done means the distribution-generation query uses the appropriate function and its output is validated against the intended distribution.

Rédigé par le modèle d'indexation à partir du texte de l'issue.