Jorrit
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BCG Consultant | Kellogg MBA | Actionable feedback to get you an offer! | Coached 100+ candidates
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Bain Company - Business Case Sample

Jemand fragte am 14. Mär 2019 - 3 Antworten

Hi!

I would appreciate if someone could help me with this question. (it's from a Bain sample case)

I've attached the chart (which has all the info needed) and the question.

The answer is 1,2 but I can not come up with that number! if anyone could give me a hint..

Thanks!!!Bain & Company Business Case Example

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Jorrit
Experte
antwortete am 14. Mär 2019
BCG Consultant | Kellogg MBA | Actionable feedback to get you an offer! | Coached 100+ candidates

Hi!

The market size of a player in this graph is equal to the area of all its squares. Just by eyeballing it you should be able to say that RetailCo is the market leader and Player A is the number 2. Now you know which formula to use.

Next you can calculate the actual market size by adding up all the states for each player (share * total sales in the state).

Does this help?

Alexander antwortete am 14. Mär 2019

You have four states in which RetailCo is active, and its RMS for each state is given below the mosaic plot (2.1, 0.8, 0.9 and 0.6). You can quickly confirm that these numbers are correct using the provided formula. Now, you need to calculate the overall RMS from the RMS values given for each state. Because the markets of the different states are not of the same size, you cannot calculate a simple average and be done with it, but need to calculate the weighted average, with the size of each of the markets ($2.3, $1.7, $1.4 and $1.0) being the weighting factor and the divisor being the total market size ($6.4). So the calculation you need to do is:

(2.1x2.3 + 0.8x1.7 + 0.9x1.4 + 0.6x1) / 6.4 = 1.26

This gives 1.2 as the closest answer. Hope this is correct and helps you out!

Vlad antwortete am 14. Mär 2019
McKinsey / Accenture / Got all BIG3 offers / More than 300 real MBB cases / Harvard Business School

Hi,

  1. Calculate the RMS for each state following the provided rules
  2. Calculate weighted average RMS (% contribution of each state = size of each state / total (6.4 bn)

Best

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