Item, store, region, national — and they don't add up

Metric designMedium

Problem. Replenishment uses your item-store forecasts. Finance uses a national forecast built separately. The sum of the item-store numbers is 4% below the national number. Both teams think they are right. What do you do?

Before you reveal: say your answer out loud, as if you were in the real interview — get your reasoning across clearly first. There is no single correct answer: reading what the interviewer is really after and defending your own thinking is what makes an answer strong.

← Randomize stores to test a new forecasting modelThe forecast feeds the order that becomes the label →