Demand planner Interview Questions

I did not make enough assumptions. I have never done a case study for an interview before. Sorry I didn't get an MBA and pay 200k+ to learn how to do case studies.

You don't need to pay $200k and get an MBA to learn how to do a case study. Many are prepared just through their professional experiences. Some prepare through online research on websites like Glass Door. Regardless, sounds like your condescending attitude and unwillingness to gain new skills in a short period of time eliminated your candidacy. For everyone else: the case study is doable. I didn't have much clue on how to attack this problem but I ran my answers against some fellow consultant and supply chain friends. A couple gave me good advice and I eventually landed a planning role. Good luck to all.

Can you share more about the case study?

Prepare well. Know the factors that affect demand of a product, be ready to apply these. Same with the supply end/inventory planning bit.

I described multiple real instances on how I handled certain projects.

Answered everything by using the STAR Approach

I would schedule by prioritization manually for high value customers, any customers we lose to risk by delayed orders, etc. and then optimizing for minimum tardiness.

There are potential adopter stock and flow models in differential solvers. the stock for Apple watch potential adopters would consist of people currently owning iPhones and factors like word of mouth, advertisement, field issue rates, etc. which would help estimate the growth rate of Apple watch users. We can add in growth rate of iPhone users themselves to add accuracy to the model.

We will produce units to account for the yield loss/quality loss of the line. If 10% of the devices/products are determined unfit at final testing, we need to give a demand signal for 1.1M units.