Probability density functions

  • Into the exponential distribution
    problem
    Favourite

    Into the Exponential Distribution

    Age
    16 to 18
    Challenge level
    1 out of 3
    Get into the exponential distribution through an exploration of its pdf.
  • PCDF
    problem
    Favourite

    PCDF

    Age
    16 to 18
    Challenge level
    2 out of 3

    When can a pdf and a cdf coincide?

  • Scale invariance
    problem
    Favourite

    Scale Invariance

    Age
    16 to 18
    Challenge level
    3 out of 3
    By exploring the concept of scale invariance, find the probability that a random piece of real data begins with a 1.
  • Distribution Differences
    problem

    Distribution Differences

    Age
    14 to 16
    Challenge level
    2 out of 3

    How could you compare different situations where something random happens? What sort of things might be the same? What might be different?

  • Circle \pdf
    problem

    Circle PDF

    Age
    16 to 18
    Challenge level
    2 out of 3

    What happens if this pdf is the arc of a circle?

  • \pdf stories
    problem

    PDF Stories

    Age
    16 to 18
    Challenge level
    2 out of 3

    Invent scenarios which would give rise to these probability density functions.

  • Exponential intersection
    problem

    Exponential Intersection

    Age
    16 to 18
    Challenge level
    3 out of 3

    Can the pdfs and cdfs of an exponential distribution intersect?

  • PDF
    problem

    PDF

    Age
    16 to 18
    Challenge level
    3 out of 3

    Given a probability density function find the mean, median and mode of the distribution.