Bell Statistics

When the data misbehaves

Sample ratio mismatch, outliers and uplift that evaporates in production are all diagnosable. These posts cover how to tell which problem you actually have.

3 posts

A/B Testing at Bell Statistics

Sample ratio mismatch, outliers and uplift that evaporates in production are diagnosable. We find out which one you have.

See how we work on a/b testing