How to better calculate churn rates
It honestly delights me to see someone correctly point out that churn is a classic example of survival analysis problem.It's shocking how many data scientist I've known how no idea how to correctly model churn, typically trying to build some predictive model, which is just a more sophisticated extension of first formula in the article.It's insane how many business problems are really survival analysis problems where you have some hazard function and censored data. In my experience having data scientists that can correctly identify this is very rare (and a great sign of how broken that entire field is right now).