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10 cards from this deck
An extreme value that stands out from the rest of the data.
Using IQR: below Q1−1.5×IQRQ_1 - 1.5×IQRQ1−1.5×IQR or above Q3+1.5×IQRQ_3 + 1.5×IQRQ3+1.5×IQR.
The spread of the middle 50% of data.
Below Q1−1.5×IQRQ_1 - 1.5×IQRQ1−1.5×IQR or above Q3+1.5×IQRQ_3 + 1.5×IQRQ3+1.5×IQR.
As crosses (×) beyond the whiskers.
Data outside ar{x} extpm 3σ are outliers.
Outside ar{x} extpm 3σ.
Box plot focuses on position; SD method on distance from mean.
They can significantly affect statistical calculations.
Yes, but they may also identify different outliers.
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