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Thread: Normal Probability Plot

  1. #1
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    Normal Probability Plot

    3 questions
    1) A perfect Normal distribution displays as a straight line of data points. Right or left skewed display skewness of course. I have a plot which curves up on the right, indicating right skewness, but also curves down on the left. What does this indicate?
    2) I have another plot which tails up on the left but also on the right. Is this kurtosis? if yes, which kind?
    3) Also, how does kurtosis display on a normal distribution plot? Both Lepto and Platy please.

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    Re: Normal Probability Plot

  3. The Following User Says Thank You to katxt For This Useful Post:

    hlsmith (11-05-2016)

  4. #3
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    Re: Normal Probability Plot

    Other options include plotting a histogram with ~N overlaid or you can also look the kurtosis and other moment stats.

    PS, I remember it by, if the line looks like a skewed S in some regard it is skewed on that side!
    Stop cowardice, ban guns!

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