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... (more)

## All questions tagged estimation - Consulting Q&A - PrepLounge.com

and rise to the top

I think this particular question is not designed to reach an accurate result. There are simply too many assumptions involved, and their errors add up. Instead, the question tests whether the candidate... (more)

Hi, There are 2 ways to structure market sizing: Formula - basically a math formula to come up with a solution. The problem with the formula is that it is easy to forget something or get lost... (more)

I like this one: How many chickens are there in the world? Cheers Serhat

The very simple answer to your question is "YES IT IS VERY IMPORTANT" You even can face a market sizing question as your overall case interview at any round. Cheers Serhat

I would use the population although it will be very sensitive to many assumptions. It looks very difficult to make meaningful assumptions in terms of land size. Cheers Serhat

Hello, can anyone provide me with a summary of the key driver that are used to size or estimate in b... (more)

Hi, Assume how much time it takes the population to double (let's say 2 years as they need 2 kids). So the population will double 5 times in 10 years Population in 10 years = 2*2^5 Best

Hi, Not sure if I understand your question correctly. For commercial DD you can use the following structure: Market Size Growth rates Profitability Segments Distribution channel... (more)

Hi Anonymous, in general, the main issues with big numbers is forgetting zeros during operations. Potential tips to deal with big numbers are the following: Use correctly 10^ powers in your m... (more)

my approach would be to match supply with demand. for the gas station case, on the demand side: -Start with the total population of the area you're looking into -get the number of households -then... (more)

Hi Riccardo, I don't think that's a bad approach - is GDP change specifically provided? It is not what I would instinctively have gone for, but it does make sense. I agree with Angelo's point ab... (more)

Hi, I would calculate it the following way: 1) Calculating the number of private vehicles Calculate the number of households in UK Multiply by the average number of cars per household... (more)

Hi, Ask the interviewer 1-2 times to get a sense of how comfortable he is with rounding numbers and how many zeroes he requires. Continue with an assumption that you should keep that level of... (more)

Couple of thoughts: General approach is fine! Don't overcomplicate estimation questions Just make sure you also think of non-passengers! You can segment e.g. into arriving passengers, departing pa... (more)

Hi, Several sources: Market-sizing and brainteaser books (e.g. Are you smart enough to work at Google?, How would you move mount Fuji?) MBA Casebooks - the most known - Columbia, MIT, Whart... (more)

First, understand what is the "ocean" (e.g. assess the main dimensions of plane, etc.) Second, understand the unit with which you deal (e.g. ball, ppl, table) Third, understand the limitations &... (more)

Hi, 1) I would recommend you to prepare for case interviews as much as possible instead of trying to predict your case types. The much better indicator will be the specialization of the company its... (more)

Hi, thanks for your question. I think the case is essentially testing your ability to segment a massive concept like 'internet websites' to its components. Below is my answer for this case: Assume... (more)

No expert by any means but in an estimation question is always good to end with a sanity check. In this case, the sanity check could be that according to Dominic Barton (McKinsey's global managing... (more)