Summary Statistics

  • Lyrics © Mary McLellan
    may sing to the tune of Journey's "Faithfully" 

    How do I know what measure to use
    Sometimes there’s symmetry
    Sometimes there’s skew

    When there’s skew, when there’s outliers
    All I know is that I need resistance
    The measure of center that is resistant to the skew
    The measure of spread that is resistant too
    Are the measures that I should choose to use
    I guess that I should choose then
    Interquartile range and median.

    Symmetry, symmetry 
    Standard deviation and mean
    Symmetry, Symmetry
    Standard deviation and mean

  • Lyrics © Mary McLellan
    may sing to the tune of ABBA's "Dancing Queen"

    If you have skew,
    then you must choose to use median and IQR ooh
    Symmetry, standard deviation and mean
    If you have skew,
    then you must choose to use median and IQR ooh
    Symmetry, standard deviation and mean

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

    When the data that you have goes through a transformation
    Addition and subtract, addition and subtract
    Addition and subtract
    Affects the center only

    When the data that you have goes through a transformation
    Multiply and divide, multiply and divide, multiply and divide
    Affects them both

  • Lyrics © Mary McLellan
    may sing to the tune of Fun's"We Are Young"

    Give me a second now
    I need to get my words straight
    I need to learn the vocab that is all about the data’s shape
    Uniformed, symmetrical, skewed to the right and the left
    Will there be an outlier or is the shape regular
    I know I then choose the center, though…
    Do I pick mean or median?
    So that I don’t get confused the spread that I choose to use is IQR or standard deviation

    When the AP test approaches and I want to get a 5, I know what to do:
    Describe the distribution
    Shape and outliers
    Center and spread
    Describe the distribution
    Shape and outliers
    Center and spread
    When the AP test approaches and I want to get a 5, this song will help me to thrive

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