How do you read a boxplot?

easy

Answer

$Box: from Q1 to Q3 (middle 50% of data).$
$Line in box: median.$
$Whiskers: extend to farthest points within 1.5\cdotIQR of the box.$
$Points beyond whiskers: potential outliers.$
$Compare boxplots side-by-side to see distribution shape and outlier density across groups.$
$Weakness: hides multimodality (violin plots or histograms are better for shape).$

Check yourself — multiple choice

Box is mean±SD
Box: Q1-Q3; line: median; whiskers: 1.5·IQR; points beyond: outliers — hides multimodality
Only for one group
No summary

Boxplot: Q1/median/Q3 + 1.5·IQR whiskers + outliers; doesn't show multimodality.

#descriptive#eda

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