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Case Study Preparation
Rachel Power
LSE Careers Service
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Case studies are increasingly widely used in recruitment
• Consulting – management, economic
• Marketing – new products, market growth
• Finance – acquisitions, new ventures
• Digital industries – new idea launch
• Energy – exploration of new markets
• Non-profit – improving outcomes
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Case study used to assess motivation, fit and skills
Problem solving
• analyse
• breadth & depth
• logical structure
• quantitative
• integrate
Interpersonal
• communicate
• get to point
• collaborate
• relate at different levels
Leadership
• impact, confidence
• maturity
• comfort with ambiguity
• drive & enthusiasm
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Maths practice
The number of wi-fi hot spots in US last year was 72,000: up 60% from year before.
How many wi-fi hot spots were there the year before?
practise percentages, decimal points, fractions without calculator
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Types of case studies • Market sizing
• Business issues
– Profit improvement
– Industry analysis
– Market entry
– Starting new company
– Developing new products
• Data analysis
– 5 slides of info, findings & recommendations
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How to approach case study interview
• Do not jump to a solution!
• Clarify – understand the problem, paraphrase
• Structure – first I’ll look at…, then (breadth)
• Analyse – gather and analyse facts -develop problem (depth)
• Conclude – brief summary, integrate, solutions with ‘trade offs’
• Think out loud & take notes – engage interviewer
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Structure
• What sort of problem is it?
• Phrases such as ‘improve profitability’ ‘enter the x market’, ‘manufactures jet engines. It is desirable industry to be in?’
• Opening question: “how would you approach this?”
Or
• “First I’d like you to…. specific
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Profitability structure
“to understand what has happened to profitability I’ll use
Profit = revenue – costs formula this will help understand whether decline in profits is
due to loss in revenues (price x volume) or increase in costs (fixed costs + variable costs)”
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Enter new market
External factors
industry competitors customers
Internal factors
state of business
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Your structure v frameworks
Structure & headings • Profitability: P= R – C
• Enter market:
financials
market growth
competition
government/reg
• Cost benefit analysis
• SWOT
Frameworks – don’t force
• Porter’s 5 forces
• 4 Cs
• Kotler’s 4 Ps
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Tips for case study interview
• Take clean notes – figures, structure • Ask questions and listen to answers • Don’t worry if you get figures wrong, continue • Maintain eye contact • Think out loud – logical process matters • Don’t force a framework • Conclude = you are going to meet the client,
what would you say, NOT a description of everything you have considered
• Recommendations – trade offs
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Estimates and brainteasers
• Estimate the number of petrol stations in the UK
• Number of tennis balls you can fit into a jumbo jet
• Why are manholes round?
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Estimate the number of petrol stations in the UK
Possible answer
65 million people in UK
1 car every 5 people = 13m cars
500 cars each petrol station
13m / 500 = 26,000
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Tips for estimates
• Use round figures
• Assumptions are all important, most sensitive
• General knowledge - populations
• Formulae
– Volume of sphere / cube
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Kensington Deli
• Our client is high quality delicatessen, in West London. It also sells home cooked ready made meals. It has experienced a downturn in profits over last 2 years.
• The client would like to know how to improve profits.
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Kensington Deli
• Clarify
• What is question?
• What is question that hasn’t been articulated?
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Kensington Deli Structure
“to understand what has happened to profitability I’ll use
Profit = revenue – costs formula
this will help understand whether decline in profits is due to:
loss in revenues (price x volume)
or
increase in costs (fixed costs + variable costs)”
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Kensington Deli
• Structure 1
Revenues and costs
• Structure 2
Products/Pricing, Competitors, Customers
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You can prepare for case study interviews
• Firms’ websites
• Read business news
• Brush up your maths (formulae, percentages)
• Practise with friend, group
• Friend – interviewer, evaluate under headings and give you feedback
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Resources
• Wetfeet – Ace the Case, Vault guide to case studies
• Business Schools: Harvard, Wharton, Chicago
• The Case Study Handbook, William Ellet
• Case in Point, Mark P Consentino
• http://www.casequestions.com
• McKinsey, Bain, BCG etc
• www.mbacase.com