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the number in your piece of data = n

lower quartile, n+1 divided by 4

upper quartile, n+1 divded by 4 and times by three

interquartile range(IQR) = upper quartile - lower quartile

outliers(O) = interquartile range x 1.5

lower than IQR-O is an outlier (h)

above IQR+O is an outlier (h)

the outliers on your box plot are any numbers that are the value i have named (h) ^

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Q: How do you work out outliers on a box plot?
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