Market Sizing & Estimation Certification

The Market Sizing & Estimation Certification is a free beginner-level, 15-minute skill test from Science of Apps. It tests market sizing and estimation — top-down and bottom-up approaches, TAM, SAM and SOM, segmentation and structuring an estimate, choosing sensible assumptions and round numbers, mental maths for consulting cases, sanity checks and triangulation, supply-side versus demand-side sizing, and presenting an estimate with clear logic and ranges — written to consulting case interview guidance, McKinsey and BCG practice, and UN and US Census population data for 2026 and 2027. Score 70% or more on its 15 questions to earn a verifiable Market Sizing & Estimation certificate (SOA-MSE). Every question is based on published standards and research — including Interviewing at McKinsey (McKinsey & Company), McKinsey Insights and research (McKinsey & Company), The Pyramid Principle: Logic in Writing and Thinking (Barbara Minto) (Minto International) — and each answer is explained with its source.

Science of Apps offers a free Market Sizing & Estimation Certification, written for 2026 and 2027. It tests structuring an estimate, assumptions and calculation and sanity checks and communication with 15 original scenario questions in all, each naming its published source; you get an instant score and a verifiable certificate with a credential ID you can add to LinkedIn.

Read the three skill areas on this page, then take the 15-minute test online — no fee, course or sign-up. You see every answer explained when you finish. Score 70% or more and you get a Market Sizing & Estimation certificate straight away, on screen, as a PDF and by email, with a credential ID anyone can verify.

Yes. The questions are original scenarios written by Science of Apps, and each one is based on a public source you can read: Interviewing at McKinsey (McKinsey & Company); McKinsey Insights and research (McKinsey & Company); The Pyramid Principle: Logic in Writing and Thinking (Barbara Minto) (Minto International); QuickFacts (US Census Bureau); World Population Prospects (UN Department of Economic and Social Affairs, Population Division); Words of Estimative Probability (Sherman Kent) (CIA Center for the Study of Intelligence). The source is shown under each question and linked in the answer review. Science of Apps doesn't copy questions from other tests.

Three skill areas with five questions each, drawn from a bank of 10 per area so a retake brings new questions: Structuring an Estimate (Top-down and bottom-up, Segmentation and TAM, SAM and SOM); Assumptions and Calculation (Reasonable assumptions, Mental maths and Worked estimates); Sanity Checks and Communication (Triangulation, Ranges and sensitivity and Presenting the answer). Every question is an original scenario written to the 2026–2027 standard, with the published source named under it.

Consulting case interview candidate, Strategy or business analyst, Startup founder preparing an investor pitch, Product manager or marketer and Business student. It suits students at leading universities, career switchers and experienced professionals who want quick, verifiable proof of Market Sizing & Estimation knowledge in 2026 and 2027.

MBB, Big 4 strategy and in-house strategy teams hire heavily from tier-1 campuses; these are the skills used day-to-day after the case interview. Passing earns a founder-signed Science of Apps certificate with a credential ID and QR code that recruiters can verify.

Top-down starts from a large known figure, such as population or total industry revenue, and narrows it with percentages. Bottom-up builds from units, such as customers times purchase frequency times price. Using both and comparing results is a strong sanity check.

Total addressable market is the total demand for a product or service. Serviceable available market is the part a company can reach with its offering and channels. Serviceable obtainable market is the share it can realistically capture in a given period.

Yes. The test is online, in English and free everywhere — people take it from India, the US, the UK, Europe, Africa, Latin America and Asia-Pacific. Your certificate is dated with your own local date and can be verified from anywhere at scienceofapps.com/certification/verify/.

15 questions — 5 from each of 3 skill areas — with a 15-minute limit. You need 70% (11 of 15) to pass and 90% for distinction.

We rate it Beginner: no experience needed: fundamentals and clear reasoning. It has 15 scenario questions — 5 from each of 3 skill areas — and a 15-minute limit. You need 70% (11 of 15) to pass and 90% for distinction.

Nothing. There is no fee to take a test, to receive the certificate, to have it emailed or to verify it, and no sign-up.

On our server, not in your browser. The answers never reach the page until you submit, so a certificate can only be earned by passing. Each certificate gets a unique credential ID stored by Science of Apps.

You see your score for each area and every question with the correct answer and why, with the published source behind it. You can retake after 30 minutes, and the retake draws questions you haven't seen yet.

No. Every certificate is dated, so it always shows when you passed. Retake a test any time for a newer date or a higher score.

Yes. After you pass, Add to LinkedIn opens the Licenses & certifications form with the certificate name, Science of Apps as the issuer, the issue date, your credential ID and the verification link filled in. You can also download it as a PDF or PNG, and it's emailed to you as a PDF.

Every certificate has a credential ID and a QR code. Scanning it, or entering the ID at scienceofapps.com/certification/verify/, shows the holder's name, the certification, the score and the issue date from our records.

No. They are Science of Apps' own assessments of applied skill. They aren't issued by a university or standards body, and they work best alongside a portfolio that shows the skills in real work.