Experiments

  • Lyrics copyright by Heather Nichols
    may be sung to the tune of the traditional Scottish Gaelic tune, "Bunessan".

    Randomization
    Reduces bias
    Controls for confounding variables
    Establishes cause and effect
    Creates comparable treatment groups
    And in a random sample
    We can generalize our findings
    To its population.

  • Lyrics and music ©2025 by Heather Nichols

    Blocking reduces variability
    Within treatment variability on the response variable
    Creates similar groups to see
    How they respond differently
    To the treatments in the experiment.

  • Q. Why is the flu vaccine like a good experiment?

    A. Both are designed to control variants (variance).

    Larry Lesser & Dennis Pearl

  • by Larry Lesser

    The ends of lines
    Are grouped by rhymes;

    Within each pair,
    Two treatments shared.

    If something lurks,
    This plan still works,

    But it takes time
    To match the lines

    And if one leaves….

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