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“Unboxing Group Comparisons: Discover Insights with Box & Whisker Charts 🙋”
Box & Whisker Showdown: Comparing Groups Made Simple..
Please read my this blog before you dive in. — The Power of Box Plots: A Simple Tool for Complex Data
Start with the boxes:-
They represent the interquartile range, or the middle half of the values in each group
Case — 1:- Non-overlapping boxes, groups are different.
If two boxes do not overlap with one another, say, box A is completely above or below box B, then there is a difference between the two groups.
If they overlap, move on to the lines inside the boxes.
Case — 2:- Boxes overlap but don’t spread past both medians: groups are likely to be different.
The middle lines:
These are the medians, the “middle” values of each group. If the median line of box A lies outside of box B entirely, then there is likely to be a difference between the two groups.