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DATAGOZ
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Learn data
through cases that look
like yours

Data analysis, business intelligence and applied AI. Each lesson starts from a conclusion that is wrong but defensible, then shows why it is wrong — on exercises built from real professional situations.

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Master the tools recruiters are looking for

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Our promise

What sets it apart from a traditional course

Four deliberate choices, all verifiable in the free lessons before you sign up.

Real business data

Complaints, contract portfolios, payment flows — with their badly entered terms and unbalanced volumes.

The mistake first

We start from a conclusion that is wrong but defensible. A reversal is easier to remember than a definition.

A tutor that says no

It answers based on the course, cites the lesson it used, and admits when it doesn't know rather than making things up.

The graded recap

Some workshops require a written report, graded against public criteria. A skill that is rarely taught.

A method designed to help you change careers, not just to get through a course

Put the steps of an analysis in order
    Your table shows 602 online rejections and 270 by phone. Which channel rejects more often?
    The online channel has more than double.
    That's the most common reading, and it's wrong. Relate each number to the total of its row: what do you find?Lesson "Choosing the right margin"
    28.7% vs. 33.3%… so the phone.
    Exactly. The online channel simply receives more requests.
    Preparation · vendor exam
    AWS Certified Cloud Practitioner
    Exam formatMCQ
    Mock examsIn preparation
    CorrectionExplained
    Taking the examWith the publisher

    DATAGOZ prepares you for the exam; the certification is issued by the publisher, not by DATAGOZ.

    How it works

    We practice, we don't just watch

    Depending on the course, the lesson is followed with the tutor or through video and exercises. You switch between the two whenever you like, and your progress is shared.

    1
    One lesson, one idea

    Ten to fifteen minutes, one step at a time, on a concrete case rather than an abstract example.

    2
    Live-corrected exercises

    Real console, real output. A wrong answer receives an explanation of what it corresponds to, not a simple "wrong".

    3
    A debrief workshop

    One request, raw results, a three-sentence note. Graded on four criteria, including the limitation you state.

    4
    Assessment on an unseen dataset · in preparation

    45 minutes, no hints, and a verifiable certificate available online at the end.

    Your table shows 602 rejections for the online channel and 270 for phone. Which channel rejects more often?
    The online channel has more than double.
    That's the most common reading, and it's wrong. Relative to each row's total: 28.7% vs. 33.3%. Le canal en ligne en reçoit plus de deux fois plus, voilà tout.
    Learning path

    Knowing what to learn next

    Learning paths chain together courses, workshops and assessment in the order a job requires them.

    Career path

    data analyst

    5 courses
    View learning path
    Career path

    Data engineer — Python

    Automate your data with Python: pipelines, orchestration, big data and cloud.
    4 courses
    View learning path

    Land a job in data and AI

    Career paths that chain together courses, workshops and assessment in the order a job requires them, to level up your skills or switch careers.

    See career paths
    Upskilling
    Typical pathData analyst
    From bank customer advisor to data analyst
    Career change
    Typical pathBusiness intelligence analyst
    From administrative manager to business intelligence analyst

    Typical paths, for illustration only: these are not testimonials from learners.

    Catalog

    Start with an open lesson

    The first lesson of every course is open for free — video, exercises and corrections included.

    View the full catalog
    Assessments

    Prove it, don't just follow alongComing soon

    Finishing a course proves you took it. A DATAGOZ assessment asks you to produce a result on a dataset you've never seen, in 45 minutes, with a grading rubric published in advance.

    The resulting certificate will carry an identifier that an employer can verify online, without an account.

    EXAMPLE
    DATAGOZ IdentifierDG-7F2C-4A91
    Certificate of completion

    Data analyst with R

    Marion Lefranc
    completed the full learning path and passed the final assessment on an unseen dataset.
    82 / 100score
    43 minduration
    28 hcourse
    Pricing

    One subscription, the whole catalog

    The first lesson of every course is open. You only pay if the content convinces you.

    Discovery

    To judge on the merits before committing.
    €0forever
    No credit card required
    Create a free account
    • First lesson of each course
    • Exercises for these lessons, corrected
    • Detailed program of each course
    • Rest of the courses
    • Certificates of completion

    Full access

    The entire published catalog, with no time limit.
    €19/ month
    No commitment, cancel in one click
    Subscribe
    • All published courses and learning paths
    • Exercises corrected automatically
    • Certificate of completion in your name
    • Datasets and PDF cheat sheets
    • New courses included

    For a team

    Train several team members, with a single invoice.
    On quote
    From 3 people
    Request a proposal
    • Full access per team member
    • Tracking space for the manager
    • Datasets from your industry
    • Named certificates
    • Quote, invoice, bank transfer accepted

    DATAGOZ is not a registered training provider: subscriptions are not eligible for professional training funding schemes. Why we write it →

    Where we stand

    The numbers, as they are

    We prefer to publish modest, accurate figures rather than impressive counters.

    Figures read live from our catalogue. We do not publish employment rates: we don't have the means to measure them seriously.

    Frequently asked questions

    What people ask us the most

    Ready to start?

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