expert
Expert with best answer

Guennael

99% Recommendation Rate

243 Meetings

1,225 Q&A Upvotes

USD 319 / Coaching

How can I train my analytical analysis? (Which cases?)

Math asked on Sep 28, 2018

Dear all,

I find myself having some issues with the analytics of cases. I usually do quite well when it comes to the non-analytics cases where the business sense is tested, but I really have troubles when it comes to the analytics (working with growth percentages, making decisions based on data) - What cases would you recommend me to do (here on Preplounge) to work on this?

Best regards,
Mathieu

3 answers

  • Upvotes
  • Date ascending
  • Date descending
Best Answer
Guennael replied on Sep 28, 2018
Ex-MBB, Experienced Hire; I will teach you not only the how, but also the why of case interviews
Book a coaching with Guennael

99% Recommendation Rate

243 Meetings

1,225 Q&A Upvotes

USD 319 / Coaching

Not a direct answer to your question, but make sure you are very comfortable with the math. 10-15 minutes/day on caseinterviewmath.com for example, will go a long way; this website will rank you per accurracy and speet against all other applicants - and the good news is you improve very quickly, just a few days typically.

PrepLoung also has solid math material btw. Make sure also to differentiate well between "percent" and "percentage point"; mixing the two up will show you as lacking rigor and may cause you to get mixed up quickly.

As to the case piece itself, don't forget to quantify: why? when? how much? + trends of course.

Alessandro
Expert
replied on Sep 29, 2018
Bain & Company | University of Cambridge | CV/Resume writing | 770 GMAT
Book a coaching with Alessandro

100% Recommendation Rate

60 Meetings

789 Q&A Upvotes

USD 139 / Coaching

Hey,

A short answer: Kellogg 2011 casebook has a lot of good, analytical cases.

You can download this easily online. Otherwise private message me and I can send it to you as well.

Hope this helps!

Alessandro

Vlad replied on Sep 28, 2018
McKinsey / Accenture / Got all BIG3 offers / More than 300 real MBB cases / Harvard Business School
Book a coaching with Vlad

97% Recommendation Rate

344 Meetings

4,530 Q&A Upvotes

USD 319 / Coaching

Hi,

Something that helped my candidates - download ALL casebooks available online and go through the math problems in the cases. They will give a good sense of required business terminology. Then you can google what you don't know.

P.S. don't follow the books solutions to solving the cases since they are not that good. Just practice the math problems

Here is a set of things you need to know:

1) Math and formulas:

  • Interest rates calculations
  • Compound margin
  • NPV using the Rule of 72, Perpetuity
  • CAGR using the Rule of 72
  • Currencies exchange calculations
  • Speed, time, distance calculations
  • Equations, systems of equations
  • Ratio & Proportions
  • Little's Law
  • Solving the problems by calculating the area of the triangle
  • Profit / breakeven formula
  • Correlations, outliers (being able to spot on the graphs, tables)

2) Fast math skills

  • Rounding up and down
  • Learn how to multiply double digit numbers (https://www.youtube.com/watch?v=6ndkkPZYJHo)
  • Learn the division table up to 1/11 (i.e. 5/6 = 83.3)
  • Learn how to work with zeros using powers (e.g.: 4000000 = 4*10ˆ6)

Use math tools (Mimir math for iOS), Math tool on Viktor Cheng website to practice

3) Working with tables and graphs and deriving conclusions

  • Study "Say it with Charts" book
  • Check all available MBB presentations and publications. Practice to derive conclusions and check yourself with the actual ones from the article / presentation
  • GMAT IR part (Official guide and Manhattan prep)
  • Learn basic statistics (Any GMAT or MBA prep guides)

Good luck!

Best

Related BootCamp article(s)

Why Math matters

Your math skills will be tested in each and every consulting interview. So you better brush up mental math skills to succeed.

4 Comment(s)

Fast Math: How to Master Mental Math

Apply these tips and tricks for outstanding mental math shortcuts to impress your interviewer in your next case interview.

0 Comment(s)

How to Read Charts and Data in Case Interviews

We explain and give tips on how to understand and analyze graphs, charts and data presented by interviewer to candidates in case interviews.

5 Comment(s)

Typical Question Types in Written Tests

Questions among all tests can be categorized in math, GMAT-style, chart reading and brain teaser questions. Each type needs to be approached differently.

4 Comment(s)

Related case(s)

Airline Economics

Solved 10.0k times
4.3 5 441
| Rating: (4.3 / 5.0)

We are an airline major operating out of India. We want to increase the number of passengers on all our flights. Could you please calculate the financial return of adding one more passenger per flight? Open whole case

REA Reinsurance

Solved 8.6k times
4.1 5 882
| Rating: (4.1 / 5.0)

Your client, REA, is a reinsurance company. REA recently acquired another reinsurance company (approximatively same size): the choice of this company was notably based on its product portfolio as well as its market presence which appeared complement with REA. However, the acquisition is not well r ... Open whole case