Upper Whisker

Definition

In a box plot, an upper whisker represents data points above the third quartile (Q3) by extending to the highest value within 1.5 times the interquartile range above Q3. It helps identify potential outliers or extreme values in the upper range.

Related terms

Interquartile Range (IQR): The difference between Q3 and Q1; it measures the spread or variability between these quartiles.

Lower Whisker: Represents data points below Q1 by extending to the lowest value within 1.5 times IQR below Q1.

Outliers: Data points that are significantly higher or lower than most other values in the dataset.