Stem and Leaf Plot

Source: http://www.basic-mathematics.com/stem-and-leaf-plot.html

Stem and Leaf plots categorize data in numeric order. A vertical line is used to separate the numbers from their origin. For instance, the first number in the stem column is 10, which represents 100. The numbers to the right, or the leaves, consist of 4 and 7. Together these numbers represent 104 and 107. This is an easy way to look at a collection of data with similar number values, and not have to worry about looking at their columns and where they line up on the graph. This is a much quicker way of interpreting the data and discovering things such as the mean, median, and mode.