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Is the usage of calculator(or perceived well) for market sizing and/or math questions portion of the case interviews?

Market sizing Quantitative skills
Recent activity on Feb 23, 2018
Anonymous gave the best answer on Jan 07, 2018
In my experience at Bain, BCG and McKinsey no use of calculator during in-person interviews is generally allowed. However the suggestion of writing down the math and calculation is one that I second wholeheartadly becau ... (read entire answer)
3
Answers
11.1 k
Views
14
Total Upvotes
on Feb 23, 2018 on Feb 23, 2018
Last Activity

Brain teaser / market sizing

brainteaser Market sizing
Most recent answer on Jul 27, 2023
The best answer (on Jun 22, 2019) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on Jun 22, 2019
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, Why don't you calculate the meat consumption in China from the population and then get the number of pigs from that? Best
3
Answers
8.6 k
Views
20
Total Upvotes
on Jul 27, 2023 on Jul 27, 2023
Last Activity

Market sizing from demand or supply side

Market sizing
Most recent answer on Nov 19, 2023
The best answer (on Nov 19, 2023) is from:
Ian
Expert
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Ian
Expert
 gave the best answer on Nov 19, 2023
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
When you're estimating NOT guessing. If you're doing any approach and you're making up numbers, then it's the wrong approach! It's very simple: Do the approach the is the easiest for you given the question. Are they ask ... (read entire answer)
4
Answers
8.3 k
Views
11
Total Upvotes
on Nov 19, 2023 on Nov 19, 2023
Last Activity

Market sizing: Milk consumption

estimation estimation market sizing Market sizing milk consumption
Most recent answer on Oct 10, 2019
The best answer (on Oct 10, 2019) is from:
Antonello
Expert
McKinsey | NASA | top 10 FT MBA professor for consulting interviews | 6+ years of coaching
Antonello
Expert
 gave the best answer on Oct 10, 2019
McKinsey | NASA | top 10 FT MBA professor for consulting interviews | 6+ years of coaching
1. You can use 5m. With all the assumptions you are going to make, this first approximation is not important. I recommend asking the interviewer something like "Can I use 5m to facilitate the calculation?". 99% of the i ... (read entire answer)
3
Answers
6.9 k
Views
9
Total Upvotes
on Oct 10, 2019 on Oct 10, 2019
Last Activity

Market Sizing - Number of cars sold in Malaysia per Year

case guesstimation Guesstimate Market sizing
Recent activity on Oct 18, 2018
The best answer (on Oct 18, 2018) is from:
Francesco
Expert
#1 Coach for Sessions (4.500+) | 1.500+ 5-Star Reviews | Proven Success (➡ interviewoffers.com) | Ex BCG | 10Y+ Coaching
Francesco
Expert
 gave the best answer on Oct 18, 2018
#1 Coach for Sessions (4.500+) | 1.500+ 5-Star Reviews | Proven Success (➡ interviewoffers.com) | Ex BCG | 10Y+ Coaching
Hi Anonymous, as mentioned by Elias, the fact that you don't get the exact number is not a major problem in a market sizing so far that you are not an order of magnitude above or below the real number - your structure ... (read entire answer)
3
Answers
6.3 k
Views
12
Total Upvotes
on Oct 18, 2018 on Oct 18, 2018
Last Activity

Market Sizing in IB interviews: how many cars go through X street in Madrid between 8 am and 9 am

Market sizing
Recent activity on Feb 13, 2018
Anonymous A gave the best answer on Feb 13, 2018
Hi Javier, Usually there's more than one "good" approach to a market sizing question. The approach I would take for this one would be: - First determine the length of the street and how many lanes are there - this c ... (read entire answer)
2
Answers
6.0 k
Views
16
Total Upvotes
on Feb 13, 2018 on Feb 13, 2018
Last Activity

[Healthcare Market sizing Question] Market size for cancer immunotherapy

healthcare pharma market size Market sizing
Most recent answer on Jun 26, 2023
The best answer (on Oct 14, 2019) is from:
Udayan
Expert
Top rated Case & PEI coach/Multiple real offers/McKinsey EM in New York /12 years recruiting experience
Udayan
Expert
 gave the best answer on Oct 14, 2019
Top rated Case & PEI coach/Multiple real offers/McKinsey EM in New York /12 years recruiting experience
This question can be very complicated without sufficient context setting Immunotherapy is not indicated for all types of cancers and for the ones it is indicated for you typically need to test for biomarkers present ... (read entire answer)
4
Answers
5.7 k
Views
27
Total Upvotes
on Jun 26, 2023 on Jun 26, 2023
Last Activity

Market Sizing/ Estimations- How many passengers at Heathrow Airport in a day?

estimation Market sizing
Most recent answer on Aug 15, 2019
The best answer (on Aug 11, 2019) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on Aug 11, 2019
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, You should make the following assumptions: Peak, non-peak hours and total operational hours # of planes landing and taking off during peaks and non-peaks Max # of passengers per plane and avg occupancy rat ... (read entire answer)
5
Answers
5.6 k
Views
9
Total Upvotes
on Aug 15, 2019 on Aug 15, 2019
Last Activity

Market sizing assumptions/structure

marketsizing
Recent activity on Nov 21, 2018
The best answer (on Nov 20, 2018) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on Nov 20, 2018
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, First of all - yes you should always tell your approach first. Secondly - never say - let's assume 50%. Your assumption should always be based on something: Personal experience (e.g. in my apartment building ... (read entire answer)
2
Answers
5.4 k
Views
6
Total Upvotes
on Nov 21, 2018 on Nov 21, 2018
Last Activity

How would you go about this market sizing question: 'How many barbershops/hairdressers are there in the UK?'

case interview preparation estimation market sizing market estimation Market sizing
Most recent answer on Dec 21, 2020
The best answer (on Aug 26, 2021) is from:
Ian
Expert
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Ian
Expert
 gave the best answer on Aug 26, 2021
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Hi there, Sorry to be so blunt, but you already failed at step 2. Remember, market sizing isn't about coming to the exact right answer insomuch as it's about assessing your ability to have structured thinking and abilit ... (read entire answer)
5
Answers
4.8 k
Views
13
Total Upvotes
on Dec 21, 2020 on Dec 21, 2020
Last Activity

When would you use a top-down approach to market sizing?

Market sizing
Question edited on Aug 26, 2021
The best answer (on Aug 17, 2020) is from:
Sidi
Expert
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 350+ candidates secure MBB offers
Sidi
Expert
 gave the best answer on Aug 17, 2020
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 350+ candidates secure MBB offers
Hi! Top-down market sizing is usually much easier to do and can give you a ballpark number within minutes (or even seconds). But it is usually far less accurate than a bottom-up approach. In a consulting context it us ... (read entire answer)
5
Answers
4.8 k
Views
30
Total Upvotes
on Aug 26, 2021 on Aug 26, 2021
Last Activity

B2B Market Sizing

B2B business situation Corporate Market sizing
Recent activity on Jul 05, 2018
The best answer (on Jul 05, 2018) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on Jul 05, 2018
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, In general, you have two options of including different use cases in your market sizing (b2b. commercial, etc): Calculate the private use first and then make an assumption re b2c / b2b ratio. E.g. calculate t ... (read entire answer)
1
Answer
4.4 k
Views
6
Total Upvotes
on Jul 05, 2018 on Jul 05, 2018
Last Activity

How do you go about market sizing questions and setting up a logic tree?

issue tree Market sizing
Recent activity on Jun 20, 2018
The best answer (on Jun 20, 2018) is from:
Dorothea
Expert
Ex-Oliver Wyman with 100% interview success rate - specialized in female career coaching
Dorothea
Expert
 gave the best answer on Jun 20, 2018
Ex-Oliver Wyman with 100% interview success rate - specialized in female career coaching
Hi Julian, unfortunately, there is no single universal approach here than can be applied to all market sizing cases. However, some general advice: Think about the factors the number to estimated depends on, e.g. f ... (read entire answer)
1
Answer
4.3 k
Views
6
Total Upvotes
on Jun 20, 2018 on Jun 20, 2018
Last Activity

Resources to practice market sizing

Market sizing
Most recent answer on Dec 31, 2021
The best answer (on Feb 17, 2020) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on Feb 17, 2020
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, It's less about the quantity, but rather about the tools that you use: 1) First of all, there are 2 ways to structure market sizing: Formula - basically a math formula to come up with a solution. The problem ... (read entire answer)
7
Answers
4.2 k
Views
9
Total Upvotes
on Dec 31, 2021 on Dec 31, 2021
Last Activity

Market Sizing Approach for London Eye

London Market sizing
Most recent answer on Dec 31, 2021
Anonymous gave the best answer on Apr 15, 2020
Hi there, Essentially there are 2 ways to think about it: Supply side and Demand side. Your 1) is based on Supply, while 2) & 3) is based on Demand. Agree with Vlad that 1) is better, and actually easier to do. ... (read entire answer)
7
Answers
4.1 k
Views
19
Total Upvotes
on Dec 31, 2021 on Dec 31, 2021
Last Activity

How to structuring the market sizing case?

case structure Market sizing
Recent activity on Aug 28, 2018
The best answer (on Aug 28, 2018) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on Aug 28, 2018
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, First of all, market sizing can be either a part of the case or a standalone case. Secondly, It's less about different types of the problems but rather about the tools that you use: 1) First of all, there are ... (read entire answer)
1
Answer
4.0 k
Views
2
Total Upvotes
on Aug 28, 2018 on Aug 28, 2018
Last Activity

Market Sizing: No of bottles of coke drunk in Paris per day

Market sizing
Most recent answer on Dec 31, 2021
The best answer (on Feb 13, 2019) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on Feb 13, 2019
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, Define the age groups (e.g. 10-20, 20-40, 40-80) Allocate the frequency per each age group (e.g. tens 10-20 drink x liters per week / 7 days) Find the size of the age group (Population / av life expectancy = ... (read entire answer)
2
Answers
4.0 k
Views
4
Total Upvotes
on Dec 31, 2021 on Dec 31, 2021
Last Activity

Starting a market sizing case

Market sizing marketsize
Most recent answer on Dec 31, 2021
The best answer (on Jan 15, 2019) is from:
Sidi
Expert
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 350+ candidates secure MBB offers
Sidi
Expert
 gave the best answer on Jan 15, 2019
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 350+ candidates secure MBB offers
Hi Anonymous! Please refer to this excellent article on Preplounge: https://www.preplounge.com/en/bootcamp.php/case-cracking-toolbox/identify-your-case-type/market-sizing Cheers, Sidi
2
Answers
4.0 k
Views
5
Total Upvotes
on Dec 31, 2021 on Dec 31, 2021
Last Activity

Market sizing - commercial segment often neglected?

Market sizing
Recent activity on Feb 10, 2018
The best answer (on Feb 09, 2018) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on Feb 09, 2018
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, It's neglected only if you decide to neglect it=) I recommend the following: Ask the clarifying question first: Are we looking only at the b2c segment or other segments as well. Mentioning this by itself wil ... (read entire answer)
3
Answers
3.8 k
Views
12
Total Upvotes
on Feb 10, 2018 on Feb 10, 2018
Last Activity

Market Sizing: "How big is the life insurance market in Germany?"

Market sizing
Recent activity on Aug 06, 2018
The best answer (on Aug 06, 2018) is from:
Paul
Expert
PL-level BCG experience (6 years)|Interviewer at BCG| 6/6 personal + 95%+ candidates offer success rate
Paul
Expert
 gave the best answer on Aug 06, 2018
PL-level BCG experience (6 years)|Interviewer at BCG| 6/6 personal + 95%+ candidates offer success rate
Hi, I would go with the "top-down" approach for this - high level - you can definitely refine it Step 1: find a driver or proxy of the general penetration in the population for the object involved in the market sizi ... (read entire answer)
1
Answer
3.8 k
Views
3
Total Upvotes
on Aug 06, 2018 on Aug 06, 2018
Last Activity
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