Answer:
Predictive analytics.
Step-by-step explanation:
Predictive analytics can be defined as a statistical approach which typically involves the use of past and present data ( factual informations) in order to determine unknown events or future performances of a business firm or organization. It is focused on determining what is likely to happen in the future.
In this scenario, Costco wants to know how to stock their warehouses for a future pandemic and are using current sales data to help them project the needs.
Hence, the kind of analytical technique Costco are using is predictive analytics.