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How to calculate a market sizing case instinctively and quickly?

Ben asked on Aug 28, 2018 - 1 answer
Looking for case partner in all levels to improve my case interview skill regularly. Available in afternoon or night (GMT+7).

For example look at the "Children vaccine" case. There is some point where I feel difficult to calculate instinctively as a consultant, for example to calculate the potential market sizing and the lifespan age. I would like to know the way I could improving and developing my calculation instinct quickly since most of market sizing case really testing our quantitative ability.

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Vlad
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replied on Aug 28, 2018
McKinsey / Accenture / Got all BIG3 offers / More than 300 real MBB cases / Harvard Business School
Book a coaching with Vlad

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Hi,

As for structuring - I've answered here:

https://www.preplounge.com/en/consulting-forum/how-to-structuring-the-market-sizing-case-2301

For math skills you need to learn:

  • Rounding up and down
  • Learn how to multiply double digit numbers (https://www.youtube.com/watch?v=6ndkkPZYJHo)
  • Learn the division table up to 1/11 (i.e. 5/6 = 83.3)
  • Learn how to work with zeros using powers (e.g.: 4000000 = 4*10ˆ6)

Use math tools (Preplounge, Mimir math for iOS to practice)

Best!

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