As per the Variable Definitions, Revenue is the monthly income of each client and arpu_sement is the income over 90 days / 3 or the average income over 3 months. If you see some of the observations, for example, in the Test data, for observation 1, the revenue is 5000 and arpu_sement is 1667 (5000/3). But as per the variable definitions, arpu_sement should be income over 90 days / 3. Please clarify if the revenue is over 3 months and not monthly.

Also, is the MONTANT variable the top-up amount on a monthly basis or in a year? I've found some instances where the MONTANT variable is greater than the REVENUE variable. (How can the top-up amount be greater than the revenue?)