Stem and Leaf Plot Maker With Key
A stem and leaf plot shows every value in a data set while also giving you the shape of the distribution. This stem and leaf plot maker sorts your numbers, picks a sensible leaf unit automatically, and prints the plot in plain text with a key. Each number is split into a stem (all digits but the last) and a leaf (the last digit). You can split each stem into two or five rows, compare two data sets back to back, copy the plot or download it as a text file, and read the count, median, quartiles and mode underneath.
Stem and Leaf Plot Maker
Paste numbers and get a stem and leaf plot with key, split stems, back-to-back option and summary statistics.
How to use the Stem and Leaf Plot Maker
- Paste or type your numbers, separated by spaces, commas or new lines.
- Leave the leaf unit on Auto, or set it yourself, for example 0.1 for one decimal place.
- Choose how many rows to split each stem into.
- Optionally add a second data set for a back-to-back plot, then copy or download the plot.
Features
- Auto leaf unit, or choose 0.01 to 100 and above
- Split stems into 2 or 5 rows
- Back-to-back plot for two data sets
- Decimals and negative numbers
- Key line that shows how to read the plot
- Count, min, max, mean, median, quartiles and mode
Frequently asked questions
How do you read a stem and leaf plot?
The stem is the left part of the number and the leaf is the last digit. In a plot with the key "2 | 3 = 23", the row 2 | 3 5 7 stands for 23, 25 and 27. Count all the leaves to get the number of values.
What is the leaf unit?
It is the place value of a leaf. With leaf unit 1 the leaf is the ones digit, with 0.1 it is the tenths digit, and with 10 it is the tens digit. The key tells you which one is in use.
What does splitting the stems do?
If a plot has too few rows, each stem can be split into two rows (leaves 0 to 4 and 5 to 9) or five rows (0-1, 2-3, 4-5, 6-7, 8-9). That gives a clearer picture of the shape.
How are values rounded?
Each value is rounded to the nearest leaf unit before it is split. For example 12.6 with leaf unit 1 becomes 13, so it appears as 1 | 3.
What is a back-to-back stem and leaf plot?
It compares two data sets by sharing the same stems in the middle. One set has its leaves on the left, counting outward, and the other on the right.