Salary Spread by Level — Box Plot Example
A box plot compresses each distribution into five numbers, which is what lets you compare many groups side by side in one chart.
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Reading the chart
What this example shows
- The boxes barely overlap between levels, so level explains most of the variation in pay.
- Spread widens as level rises — senior compensation is far less uniform than junior.
- Two points sit outside the whiskers. Those are individual outliers by the 1.5×IQR rule, not data errors.
The data
Paste-ready dataset
Level,Salary (k USD) Junior,68 Junior,72 Junior,75 Junior,71 Junior,79 Junior,66 Junior,74 Junior,92 Mid,96 Mid,104 Mid,112 Mid,99 Mid,118 Mid,107 Mid,101 Mid,124 Senior,142 Senior,156 Senior,168 Senior,149 Senior,178 Senior,161 Senior,152 Senior,214
Illustrative salary samples across three levels. Replace with your own before publishing.
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