Box plot whisker details

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Mohini Sengupta
Mohini Sengupta 2021-1-8
编辑： Cris LaPierre 2021-1-8
Hello. I would like more details on what the whiskers in the box plot function specifies. Right now it says +/–2.7σ and 99.3 percent coverage. What percentile does this refer to?

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Cris LaPierre
Cris LaPierre 2021-1-8
编辑：Cris LaPierre 2021-1-8
You trimmed the last part of the sentence off.
99.3 percent coverage if the data are normally distributed.
So, assuming your data is normally distributed, wisker to whisker covers 99.7% of the values you would expect to see. Remember, +/- 1 std is 68% 2 stds is 95%, and 3 stds is 99.7% of the data.

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