Skip to content
    Mathematics A-Level

    Poisson probability calculations

    What Poisson probability calculations means in Mathematics A-Level, as defined for WJEC.

    Definition of Poisson probability calculations

    Check what you remember

    Read the wording for your board, then hide it and explain Poisson probability calculations in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: WJEC

    For X ~ Po(λ), P(X = r) = (e^(−λ) λ^r)/r! for r = 0, 1, 2, ..., with mean λ.
    WJEC · Statistical distributions (AS Unit 2: Applied Mathematics A)

    Topics that use Poisson probability calculations

    Related terms

    Using Poisson probability calculations in the exam

    Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.

    Practise Mathematics questions

    Create a free account to answer exam-style questions on this topic and get feedback on your answers.

    Start free

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge

    All Mathematics A-Level terms