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Data Science & Analyticsintermediate
DS-201

Statistical Methods

When you finish, you can

Test a claim with real statistics: run and read hypothesis tests, regressions and A/B tests, and know when the numbers are lying to you.

Start hereYou need DS-101. Keep a calculator and a Colab notebook open; do each test once by hand before you run it in code.

9 hours total5 Chapters20 Lessons1 Exams3 CreditsFREE
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Debate a counselor

Take a position on Statistical Methods. The AI counselor argues the other side, asks you questions back, and cites a source for every fact it states. Sources listed under a reply are the pages it actually found; if none are listed, it is arguing from reasoning only. It is an AI and it can be wrong: check the sources.

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    Prerequisites::DS-101 Introduction to Data Science

    Course Syllabus

    9h total

    Practice

    1. Simulate 10,000 rolls of two dice and plot the sum; compare to the theoretical shape.
    2. Solve one medical-test Bayes problem by hand with a 2×2 table.
    3. Draw 1,000 sample means of size 30 from a skewed distribution and plot them.

    Check

    A test is 99% accurate for a disease 1 in 10,000 people have. Roughly what fraction of positives are real? Show the table.

    Topics Covered

    statisticshypothesisregression

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