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Anonymous A
on Aug 24, 2020
Global
I want to receive updates regarding this question via email.

Stating the hypothesis

Hi. I am wondering in which cases, stating hypothesis is appropriate and in which cases do not need hypothesis before a framework. Or, do we state a hypothesis for every case? Thanks. 

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Top answer
Sidi
Coach
on Aug 24, 2020
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 400+ candidates secure MBB offers

Hi!

And another round of the ever-repeated identical question... ;) So let me repeat what I already explained in multiple posts before:

Stating a hypothesis for the overall problem only makes sense if you really have something to ground your hypothesis on! This is very rarely the case, since case prompts tend to be quite vague at the beginning. Just stating a hypothesis for the sake of it serves no purpose! It would just be a shot from the hip - and this is something you should avoid at all cost during an MBB interview!

If the question is about finding the reasons for an observed phenomenen (e.g., fallen profits), then you can rather say “I would like to first identify the numerical driver of the problem, which can sit either on the revenue or on the cost side (or both). Based on this initial assessment, I would build a hypothesis on the underlying reasons for the detrimental development, then verify the hypothesis, and subsequently derive measures to address these reasons in order to reverse the trend.”

If the question is eseentially a go- or no-go-decision (e.g., "Should we enter the Brazilian market?"), then a MUCH better approach than a blank "Yes/No"-Hypothesis (which feels stupid anyway, right?) is to define the criterion according to which the question can be answered. This implicitly comprises hypothesis-thinking, but in a much cleaner way. All you have to do is to

(1) narrow down the question,

(2) define the criterion according to which the question can be answered with "yes",

(3) outline how you can test whether the criterion is met.

That's it! This is how you address strategic questions without shooting out non-substantiated hypotheses (or rather wild guesses!), while still being super top-down and super efficient.

Hypotheses then are used all along the way of performing the actual analyses! But it is not hypotheses on the overall question, but hypotheses on the various sub-aspects which you need to test in order to eventually answer the overall question.

I hope this helps.

Cheers, Sidi

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Allen
Coach
on Aug 24, 2020
Ex-McK Experienced Hire and EM - I show you how to perform at your best

Love this question!

I have two thoughts here.

Firstly, if the initial evidence is pretty clear as to what the answer is, you can make that your hypothesis.  Example: The question is whether to invest in new equipment that will lower costs.  Makes sense to say yes we should because XYZ.  That shoudl be your hypotheses and you should state it.

Secondly, if the evidence is not clear, your structure needs to test a hypothesis.  Example: The question is whether I should enter a new market?  Answer is I would enter this new market if a) I can forecast profitability b) I have internal capabilities and c) the market is attractive (customers, competition).  Here the hypothesis is not yes or no b/c at the beginning I don't know yet, rather the hypothesis is that these are the important factors that need to be analyzed.

Does that make sense? 

Crucial to get this right when you are learning how to solve cases.  I'm happy to explain more if you like.

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Ian
Coach
on Aug 24, 2020
Top US BCG / MBB Coach - 5,000 sessions |Tech, Platinion, Big 4 | 9/9 personal interviews passed | 95% candidate success

My view is that your framework is actually your hypothesis. It's a bit nuanced, but bear with me :)

Your framework is your structure for approaching the problem. It consits of a few main areas you'd like to look at. Inherent in your framework is a view that "If I answer A, B, and C, then we have an answer"

So, for market entry:

1) If the market is big, and it's growing, then we still want to considering entering

2) If #1 = yes, then let's see if it's attractive...can we win there? Is our product good/better than our competition's? Etc. If yes, let's definitely consider entering.

3) If #1 and #2 = yes, then, when we do enter, are we sure we can win? I.e. do we have the right plans. Will implementation actually pan out? Do we have the expertise, capital, etc.? In other words, if #2 is the thearectical, #3 is the reality.

Then, your summary becomes "I believe we should enter the market, if we can prove it's a good market, the it's attractive to us specifically, and that we will win it".

^Now this is a hypothesis :)

Read these 2 Q&As for some great context + discussion:

https://www.preplounge.com/en/consulting-forum/interviewer-led-case-interview-hyposthesis-and-ideas-7390

https://www.preplounge.com/en/consulting-forum/forming-a-hypothesis-case-in-point-vs-victor-cheng-7311

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Antonello
Coach
on Aug 31, 2020
McKinsey | NASA | top 10 FT MBA professor for consulting interviews | 6+ years of coaching

Hi, I confirm stating a hypothesis is not always required, even if it often helps you in prioritizing the branches of your issue tree and lead the case

Best,
Antonello

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Robert
Coach
on Aug 27, 2020
McKinsey offers w/o final round interviews - 100% risk-free - 10+ years MBB coaching experience - Multiple book author

Hi Anonymous,

Even though Victor Cheng offers a lot of excellent advice, including a strong focus on the hypothesis-driven approach (which really helps many candidates sharpening and focusing their thinking along the case!), stating a hypothesis at the very beginning of the case usually turns out to be more counterproductive than helpful.

Unless you are an experienced hire with a strong focus on exactly that one case question to discuss, stating a hypothesis right at the beginning of the case interview is essentially nothing else than poaching with a stick in the dark and guessing around. And here you are: you are perfectly set for a highly unstructured and confusing start into your case! (Please note that even as experienced hire, you might be completely wrong with your hypothesis, especially in the slightly artificial case interview world - so I would not even strongly recommend the early hypothesis there)

However, at the same time it's also a matter of defining 'hypothesis'. If you look at your structure at the beginning of the case interview, it is basically the connection between the current client situation and a specific goal you want to achieve. In other words, this initial structure is also a kind of hypothesis which elements you need to consider and analyze in order to clearly understand the root cause and develop a solution for that. So essentially you can also consider your structure as some kind of hypothesis.

Apart from that technicality, the correct time to explicitly state a hypothesis during your analysis phase is when you have collected some initial data and you start 'connecting the dots'. Once some distinct pieces of your analysis guide you into one specific direction, then it's the correct time to explicitly state your hypothesis and focus in on 'verifying' (in the non-scientific way) your hypothesis!

Hope that helps - if so, please be so kind to give it a thumbs-up with the green upvote button below!

Robert

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Deleted user
on Aug 25, 2020

Hi A,

Hypothesis depends on the case. So it's a case by case desicion. 

Generally speaking, stating the hypothesis explicitly is not mandatoru to solve the case, however, it's always good to have one. 

Best,
André

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The Role of the Hypothesis in Consulting
In the field of consulting, the hypothesis plays a central role in the analysis of problems, the development of solutions and the derivation of strategic recommendations. A hypothesis is a preliminary assumption or conjecture made on the basis of existing information and data. It serves as a starting point for investigations to gain empirically verifiable knowledge. This article explores the meaning, purpose, and application of hypotheses in the consulting context. The Importance of a Hypothesis in ConsultingIn the world of consulting, where complex business issues must be solved, the hypothesis is a fundamental component in developing structured approaches to solving them. A hypothesis allows consultants to sort through their thoughts and focus specifically on certain aspects of an issue. It also serves as a guideline to direct and guide the research process as data are collected and analyzed.The hypothesis also functions as an "educated guess" or informed conjecture based on existing knowledge, experience, and market insights. It helps structure the advisory process and guide efforts in the right direction. Components of a HypothesisA well-formulated hypothesis consists of several essential components:Independent and Dependent Variables: The hypothesis defines the relationship between an independent (manipulated) variable and a dependent (measured) variable. The independent variable is the one that is purposefully changed in an experiment, while the dependent variable is the response that is measured.Prediction: The hypothesis contains a clear prediction about how the change in the independent variable will affect the dependent variable. This prediction is what is tested in the experiment.Testability: A hypothesis must be testable, meaning that it can be tested by experimental investigation. It should be formulated in such a way that its correctness or incorrectness can be determined from observations and data.Clear Formulation: the hypothesis should be precise and clearly formulated to avoid misunderstandings. Clear wording also facilitates communication of the results. The Purpose of a Hypothesis in ConsultingFormulating a hypothesis serves several important purposes in consulting:Directional Thinking: A hypothesis forces consultants to think about possible causes and relationships that may have led to a problem. It promotes structured thinking and prevents aimless poking around in problem-solving.Focused Analysis: Hypotheses help focus the investigation on relevant data and information. This prevents an overload of unimportant details and allows for an in-depth analysis of the aspects that are most likely to have an impact.Measurable Results: A clear hypothesis makes it possible to establish concrete criteria for the success or failure of an investigation. This creates a basis for evaluating the effectiveness of proposed solutions.Structured Communication: A precisely formulated hypothesis facilitates communication between consultants and clients. It enables the planned steps, methods and expected results to be communicated in an understandable way. The Application of Hypotheses in ConsultingThe use of hypotheses in consulting spans several key phases of the consulting process and contributes significantly to structuring and finding solutions. In the problem identification phase, hypotheses help identify potential causes and influencing factors of a business problem by serving as a starting point for in-depth investigations.During data collection and analysis, hypotheses act as a guide to extract targeted relevant information, enabling more precise and focused data analysis.In the solution development phase, hypotheses play an important role in the evaluation and selection of different solution approaches. By serving as criteria to assess the probability of success of different options, they contribute to the development of the most promising solutions. Finally, hypotheses enable strategic recommendations to be derived. They provide a sound basis for formulating persuasive arguments in favor of particular strategies and for convincing clients of the soundness of proposed actions.Overall, the application of hypotheses functions as a systematic approach in consulting to bring structure to complex issues, perform targeted analyses, and ultimately derive informed decisions. This approach promotes the efficiency and effectiveness of the consulting process and ensures that the solutions developed are based on sound and validated assumptions. ConclusionThe hypothesis is an essential tool in consulting that helps structure complex problems, conduct targeted analyses, and derive informed solutions. It promotes a structured and focused approach and plays a crucial role in communicating ideas and recommendations to clients. In an industry based on informed decision-making, hypothesis is a powerful tool to influence the success of consulting projects.
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