Correlation/Regression

  • Lyrics © Mary McLellan
    may sing to the tune of "Play That Funky Music" by Wild Cherry

    Correlation coefficient
    Represented by the R!
    Correlation coefficient
    The variable that you use to
    represent it is the r

    Repeat

  • Lyrics © Mary McLellan
    may sing to the tune of "Billie Jean" by Michael Jackson

    Standard Deviation
    Standard Deviation
    Of residuals

    Average amount that the actual Y
    (the actual Y value point- ooooh)
    Varies from what’s predicted to
    Become
    Varies from the predicted Y

    Repeat

  • Lyrics © Mary McLellan
    may sing to the tune of "Hit Me With Your Best Shot" by Pat Benatar

    You can add, subtract, multiply, divide…
    Well you can even switch the x and y
    Akk but negative transformations fly...
    And the r doesn’t change

    You can add, subtract, multiply, divide…
    Well you can even switch the x and y
    Akk but negative transformations fly...
    And the r doesn’t change

  • Lyrics © Mary McLellan
    may sing to the tune of Taylor Swift's "Shake it Off"

    X-bar is the mean of X
    Y-bar is the mean of Y
    And the (mean, mean) point is always
    On the line, on the line

    Repeat

  • Lyrics © Mary McLellan
    may sing to the tune of Miley Cyrus' "Wrecking Ball"

    Interpret the Y-intercept
    It happens when the X is Zero
    The predicted Y is this
    And it often does not make sense

    Repeat

  • Lyrics © Mary McLellan
    may sing to the tune of "The Addams Family Theme Song"

    Interpret the slope (snap, snap)
    Interpret the slope (snap, snap)
    Interpret the slope, interpret the slope, interpret the slope

    For every 1 increase in the X
    The predicted Y, it does this…

    Interpret the slope (snap, snap)
    Interpret the slope (snap, snap)
    Interpret the slope, interpret the slope, interpret the slope

    Repeat

  • Lyrics © Mary McLellan
    may sing to the tune of "Blue Suede Shoes

    There is a strong
    There is a weak
    Positive or negative, linear

    Correlation between X and Y
    Linear between X and Y

    Repeat

  • Lyrics © Mary McLellan
    may sing to the tune of "Frosty the Snowman"

    Coefficient of determination
    The percent of variation that is found in the Y
    Coefficient of determination
    The percent of variation that is found in the Y

    It can be explained by the changes in the X
    or  it can be explained by the model itself, Oh

    Coefficient of determination
    The percent of variation that is found in the Y

    Repeat

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