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Mathematics · unit version 1

Distribution diagnostics and calibration

Inspect distribution discrepancies, derive valid null references, refit estimated models and defend categorical model revisions.

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Readiness and preparation

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Audit an unfamiliar distribution-fit investigation

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Lesson sequence

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  1. Empirical CDFs and QQ evidence

    Lesson details and objectives

    Compute both sides of tied empirical jumps and explain QQ plotting positions.

    • Compute both sides of tied empirical jumps and explain QQ plotting positions.
    • Distinguish descriptive discrepancy from calibrated evidence.

    6 practice tasks.

  2. Specified continuous-null calibration

    Lesson details and objectives

    Prove the continuous probability-integral transform.

    • Prove the continuous probability-integral transform.
    • Justify the exchangeable Monte Carlo rank test and diagnose invalid reference procedures.

    6 practice tasks.

  3. Fitted nulls and parametric bootstrap

    Lesson details and objectives

    Derive the exponential rate fit and scale-invariant discrepancy.

    • Derive the exponential rate fit and scale-invariant discrepancy.
    • Refit every reference sample and distinguish a special pivot from a general bootstrap approximation.

    6 practice tasks.

  4. Categorical fit and model revision

    Lesson details and objectives

    Compute specified and fitted Pearson discrepancies.

    • Compute specified and fitted Pearson discrepancies.
    • Explain projection degrees of freedom, boundary failures and independent model revision.

    6 practice tasks.