Stem-and-Leaf Display Generator
Create a stem-and-leaf display from your dataset to visualize the distribution of values while preserving each individual data point. This tool also calculates key summary statistics including the minimum, maximum, range, and median.
A stem-and-leaf display (also called a stemplot) is a method for organizing quantitative data in a way that shows the shape of the distribution while retaining all original values. Each number is split into a stem (typically the leading digit or digits) and a leaf (the last digit). The stems are listed in a column, and the corresponding leaves are arranged in order beside them.
Stem-and-leaf displays are especially useful for small to moderate datasets (up to about 50 values). They offer advantages over histograms because they preserve every data point, making it easy to find the median, mode, and identify outliers. They were popularized by the statistician John Tukey as part of exploratory data analysis (EDA) in the 1970s.
When reading a stem-and-leaf plot, each row represents a range of values. For example, a stem of 3 with leaves 2, 5, and 7 represents the values 32, 35, and 37. The overall shape of the display reveals whether the data is symmetric, skewed, or has multiple peaks.