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McKinsey Power Round, what should I expect?

Hey everyone, I was fortunate enough to be offered a power round at a McKinsey office on the west coast for a specific practice that is approaching quite rapidly. I want to do well on the interview (obviously) but there have been quite a few questions bugging me that I was wondering if some kind people here can help inform me on.

 

1. What would be the general seniority of the people interviewing me? Will it be primarily partners? Or will there be EMs and lower sprinkled into the mix as well?

2. When it comes to the PEI, I'm unsure of what to expect. I've been prepping a lot to try and cohesively and confidently answer the three questions that McKinsey constantly espouses in their materials, but do partners or others ask more “unstructured” PEIs? Or do they lead with that and instead probe more deeply? I've seen a lot of differing answers so the true one very well may just be it depends

3. What kind of probing questions does McKinsey usually ask within an interview? I've heard they drill very deep which makes me a tad nervous. Obviously I can't prepare for everything, but I just want to make sure that I can minimize my chances of fumbling and having the interviewer think I'm stupid or faking it.

4. Lastly, what is the general nature of the cases that will be given? I've heard that in final rounds they tend to be a bit more free-flowing and unstructured. I'm assuming that that would be the case in a power round as well but does anyone else have more detailed information than that?

 

Thank you so much everyone in advance, I've been overthinking this process a lot so I wanted to see if you all can offer some clarity on the journey. It's a bit nerve-wracking to not even have a first round that's perhaps “lower stakes” to ease myself into it.

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Top answer
Florian
Coach
on Oct 11, 2021
1400 5-star reviews across platforms | 600+ offers | Highest-rated case book on Amazon | Uni lecturer in US, Asia, EU

Hey there,

Congrats!

To answer your questions in the most concise way possible:

1. It can be a mixture of tenures, definitely, there could be EMs also. However, this has little impact on you as you will be evaluated in the same manner across roles.

2. Please have a look at this detailed article I wrote on the PEI: https://www.preplounge.com/en/mckinsey-pei

It should answer all your questions related to it. If not, reach out and I am happy to clarify further.

3. McKinsey interviewers probe if they are not sufficiently happy with your answer on the questions in the case (https://www.preplounge.com/en/mckinsey-interview) or the PEI. For the case, the questions are usually around two things

  • Anything else you can think of?
  • What's is the so-what of this? What are the implications? What do you make of this?

For the PEI, they drill deeper to understand what was said, how you reacted, what you thought in this situation, etc.

4. Have a look at this article: https://www.preplounge.com/en/mckinsey-interview

In general, the cases and evaluation are the same, however, it can be that interviewers (the more senior the more likely) deviate a bit from the script by e.g.,

  • not allowing time to think about
  • moving through the case in a more unstructured way
  • interrupting more often and asking more questions to understand your thinking
  • focusing on specific question types rather than a full case

 

All the best with your interviews and reach out if you need help!

 

Cheers,

Florian

Ian
Coach
on Oct 11, 2021
Top US BCG / MBB Coach - 5,000 sessions |Tech, Platinion, Big 4 | 9/9 personal interviews passed | 95% candidate success

Hi there,

First of all, if you can, I highly recommend a coach. You have a lot on your mind and some of these questions show me you're not quite there yet in your thinking.

1) It will be a mix, but for a supercase day you will definitely have senior level people

2) They don't ask “3 questions”. There are an infinite range of questions they can ask…across 3 themes. Please be careful here and plan to be flexible and adaptable. You need to practice with someone - get them to lookup a range of questions, ask them, and have you practice your answers on the spot.

3) Again, you could seriously use coaching here. They can ask you anything about your story. “Why did you do this?”, “Why didnt you do this?”, “Can you talk me through x thinking?”, “Wasn't x person upset? How did you handle them?", etc. etc.

4) Similar to question #2….we really can't predict this. “Unstructured” is not the term you're going for. Cases will be interviewer-led, but the topic and industry could literally be anything. There could be exhibits or there may not. There may be 6 questions or there may be 2. Please try not to predict/expect anything here! Rather, prepare for everything. Learn to be flexible/adaptable and get ready to respond well to all scenarios. Again, having a session with a coach will really help prepare you here.

Agrim
Coach
on Oct 16, 2021
Top Awarded Coach | BCG Dubai Project Leader | Master Casing in only 3 Hours | 10y in Consulting | Free Intro Call
  1. Tenures of interviewers: Should be mixed/random. EM to Partner. Doesn't matter though. Interview is an interview.
  2. PEI: It definitely depends. In most cases they will start-off with a standard question - and then they get creative when it comes to probing.
  3. Probing: Typically depends on how you answer in the first go. If you skip certain details - they might probe that. This can then go down the rabbit hole if your story is not well prepared. You must prepare for each and every detail of the story.
  4. Cases: Have a look at this question to understand the differences. https://www.preplounge.com/en/consulting-forum/what-are-some-partner-level-interview-cases-11809
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