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10 cards from this deck
To understand how spread out data values are.
Range and interquartile range (IQR).
Largest value minus smallest value.
Q₃ minus Q₁, the spread of middle 50%.
Four equal parts or quarters.
Lower quartile, 25% of data below this.
Arrange data in ascending order.
Focuses on middle 50%, less affected by outliers.
Arrange data in ascending order first.
Affected by extreme values (outliers).
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