Testing

  • Lyrics © Mary McLellan
    may sing to the tune of "Barbara Ann" by Beach Boys

    Type II Error
    Type II Error
    Type II Error
    Cause me to fail to reject
    The false null hypothesis
    Type II Error
    Type II Error

    No Evidence
    No Evidence
    No Evidence
    Cause me to fail to reject
    The false null hypothesis
    Type II Error
    Type II Error

  • Lyrics © Mary McLellan
    may sing to the tune of Queen's "We Will Rock You"

    If the null is really true and we get a sample
    That causes us to reject the null,
    That’s a Type I Error

    Type I, Type I Error
    Type I, Type I Error

    Repeat

  • Lyrics © Mary McLellan
    may sing to the tune of "Star Spangled Banner"

    Statistically significant
    Happens when your observed
    Is so far away
    Far away from expected

    There’s not really a way
    That’s the sample I got
    Happened because
    Of chance, because of chance

    Sampling variability
    Sampling variability
    Happens because you got
    Different data than me

    Oh if my observed sample’s
    In the rejection region
    Then the data that I got’s
    Statistically significant

  • Lyrics © Mary McLellan
    may sing to the tune of "Hound Dog" by Elvis Presley

    If the p-value is low
    If the p-value is low
    The null hypothesis has to go

    If the p-value is low
    If the p-value is low
    The null hypothesis has to go

  • Lyrics © Mary McLellan
    may sing to the tune of "Brown-Eyed Girl" by Van Morrison

    Do you remember when we used to sing…
    The p-value is the probability
    Of getting this sample
    Or something more extreme
    If the null is true

    The p-value is the probability
    Of getting this sample
    Or something more extreme
    If the null is true

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