Challenge 24: Performing Cohort Analysis for a Business
Level: Medium
Description: Your company wants to perform a cohort analysis to find customers that started purchasing goods on the same month (cohorts), and then track their persistence over time. To solve this challenge, you must explore a transactions dataset from 2016, identify its cohorts, calculate the customer retention ratio, separate the purchases month by month, and then visualize the persistence of the cohorts over time. Note: Customer retention rate (CRR) is the percentage of customers a company retains over a period of time. If E is the number of customers at the end of 2016, N is the number of new customers during the period, and S is the number of customers in the beginning of 2016, then CRR = [(E - N) / S] * 100.