If you care about customer retention this chart is one of the most important charts. It shows a series of retention rates over time by cohorts of when the customers have converted. By visualizing the trend you can spot where the retention problems are and understand the health of your business.
But you will hit a few hurdles when you try to calculate such data manually, which is the foundation of the above cohort chart.
That's where the survival analysis algorithm 'Kaplan-Meier' comes in rescue.
Kan has presented what the survival analysis algorithm is and how can it be used to analyze your customer retention better, and how you can do it quickly in Exploratory.