DAX Practice Test

The DAX Practice Test is a free intermediate-level, 20-minute skill test from Science of Apps. Practice for DAX (Data Analysis Expressions) used in Power BI, Analysis Services and Power Pivot — measures and calculated columns, row and filter context, CALCULATE and filter modification, time intelligence, and iterators, relationships and variables — written to Microsoft DAX documentation and reference guidance for 2026. Score 70% or more on its 20 questions to earn a verifiable DAX Readiness certificate (SOA-DAXX). Every question is based on published standards and research — including DAX Guide (SQLBI), CALCULATE function (DAX) (Microsoft Learn) — and each answer is explained with its source.

Yes. Science of Apps has a free DAX Practice Test built on the current exam outline for 2026 and 2027. It covers measures and columns, row and filter context, CALCULATE and filters and time intelligence, iterators and variables, scores you instantly and issues a verifiable certificate.

Read the four skill areas on this page, then take the 20-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 DAX Readiness 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: DAX Guide (SQLBI); CALCULATE function (DAX) (Microsoft Learn). The source is shown under each question and linked in the answer review. Science of Apps doesn't copy questions from other tests.

Four skill areas with five questions each, drawn from a bank of 10 per area so a retake brings new questions: Measures and Columns (Measures, Columns and Aggregation); Row and Filter Context (Row context, Filter context and Transition); CALCULATE and Filters (CALCULATE, Filter args and Functions); Time Intelligence, Iterators and Variables (Time, Iterators and VAR). Every question is an original scenario written to the 2026–2027 standard, with the published source named under it.

Power BI developer or analyst, Data analyst, BI developer, Analytics engineer and Finance or operations analyst using Power BI. It suits anyone who wants a quick, verifiable way to show DAX knowledge in 2026 and 2027, from students and career switchers to experienced professionals.

DAX (Data Analysis Expressions) is the formula language used in Power BI, Analysis Services Tabular and Power Pivot. It defines measures, calculated columns and tables using functions that work over the data model's tables and relationships.

A calculated column is computed row by row and stored in the table, using row context. A measure is computed at query time based on the current filter context, and is not stored per row. Measures are usually preferred for aggregations.

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/.

20 questions — 5 from each of 4 skill areas — with a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

We rate it Intermediate: assumes hands-on experience in the role. It has 20 scenario questions — 5 from each of 4 skill areas — and a 20-minute limit. You need 70% (14 of 20) 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.