Sorry, you need to enable JavaScript to visit this website.

Testing

  • Lyric copyright © by Dennis K Pearl
    May sing to the tune of "Santa Claus is Coming to Town" (John Frederick Coots and Haven Gillespie)

    You better watch error;
    they better be tight.
    Better be normal,
    or it don't work right.
    ANOVA Table's coming to town!

    It's summing those squares,
    And checking 'em twice;
    Variance 'tween or within a slice.
    ANOVA Table's coming to town.
    ANOVA Table's coming to town.
    ANOVA Table's coming to town!

    It sees the data you've been keeping;
    ...but not if they are fake.
    It knows if they're within or between;
    So between for goodness sake!

    Oh - You better watch error;
    they better be tight.
    Better be normal,
    or it don't work right.

    ANOVA Table's coming to town.
    ANOVA Table's coming to town.
    ANOVA Table's coming to town!

  • By Michael Greenacre & Gurdeep Stephens
    Barcelona, Catalonia & Victoria, Canada, March 2015

    Statistics, logistics, cladistics seem to me
    To have a common theme scientifically,
    Economists, biologists, with PhD degrees,
    They all need some proof of their theories.
    A letter is the key, you'll see clearly,
    Not B nor G nor V -- but it's the P !

    There's no values like P-values
    Like no values I know
    Think of something that is not worth proving,
    An hypothesis that everyone calls null,
    If your P is too large to reject it
    Then your experiment is rather dull.

    There's no values like P-values,
    Especially when they are low,
    Don't be sad if your P's over point-O-five,
    Just try again with samples twice the size,
    Everything is possible, just trust in me:
    Put your faith in the P.

    The F test, the Z test, the chi-square and the T
    And other cryptic terminology
    Anova, regression, tests distribution-free,
    They all need some sort of guarantee.
    So if you find a tiny effect size
    The P-value will be a good disguise.

    There's no values like P-values,
    The frequentist's hero,
    When you get that data modeling feeling
    But results you have are not a lot,
    You will need some stats that are appealing
    To show the journals your work is hot!

    There's no values like P-values
    Especially when they're low
    Don't be sad if your P's over point-O-five,
    Just try again with samples twice the size
    Everything is possible, just trust in me:
    Put your faith in the P!

    Check out the Video

  • Lyric © Mark Glickman
    may sing to tune of "Nowhere Man" (John Lennon, Paul McCartney)

    He's a real ANOVA man
    Designing all his sampling plans
    Calculating mean-squared errors and p-values.

    Wants to test for equal mu's
    Knows which tables he must use
    All his samples he will choose at random.

    ANOVA man, please listen;
    Where's the data that you're missing?
    ANOVA man, what kinds of bias can you withstand?

    Writes down two hypotheses;
    Hopes to reject the first of these;
    Needs to list out all degrees of freedom.

    ANOVA man, try harder;
    Don't give up, you're smarter;
    ANOVA man, how come your students don't understand?

    At 0.05 he rejects
    Ignores the size of his effects
    Now he's stuck -- he's got selection bias!

    ANOVA man, please listen;
    Where's the data that you're missing?
    ANOVA man, what kinds of bias can you withstand?

    He's a real ANOVA man
    Designing all his sampling plans
    Calculating mean-squared errors and p-values.

Pages