Stem and Leaf Plot Calculator
Enter numeric data to generate a stem-and-leaf plot, preserving individual observations while summarizing the distribution.
How to Use This Calculator
- Enter raw observations (integers or decimals rounded to one decimal place).
- Review stems (tens) and leaves (ones digits) to see distribution shape.
- Identify clustering, gaps, and potential outliers directly from the display.
- Export or copy the ASCII plot for reports or teaching materials.
Formula
A stem-and-leaf plot is a formatting procedure rather than a formula-based calculation. Each number is decomposed into a stem (typically the leading digits) and a leaf (the final digit). This calculator uses tens as stems and ones as leaves.
Full Description
Stem-and-leaf plots provide a compact way to visualize distribution shape while keeping original data visible. They are useful for exploratory data analysis, classroom demonstrations, and checking assumptions (such as approximate symmetry). Because each leaf is a single digit, values are often rounded or truncated to keep the display compact.
Frequently Asked Questions
Can I change the stem unit?
This version uses tens as stems. For other units, scale your data (e.g., divide by 10) before inputting.
How are negative numbers handled?
Negative values receive negative stems. Leaves display the last digit based on rounding toward zero.
Are duplicates shown?
Yes. Each occurrence of a value appears as an additional leaf in the corresponding row.