Stem and Leaf Plots

A Stem and Leaf Plot is a special table where each data value is split into a "stem" (the first digit or digits) and a "leaf" (usually the last digit). Like in this example:

Example:

"32" is split into "3" (stem) and "2" (leaf).

Stem and Leaf Plot

Stem "1" Leaf "5" means 15

The "stem" values are listed down, and the "leaf" values go right (or left) from the stem values.

The "stem" is used to group the scores and each "leaf" shows the individual scores within each group.

Example: The height of apple trees in the park are:

1.2, 1.3, 1.3, 1.5, 1.7, 1.8 2.2, 2.6, 2.6, 3.5, 4.0

And here is the stem-and-leaf plot:

Stem Leaf
1 2 3 3 5 7 8
2 2 6 6
3 5
4 0

Stem "1" Leaf "2" means 1.2

Note:

  • Say what the stem and leaf mean (Stem "1" Leaf "2" means 1.2)
  • In this case each leaf is a decimal
  • It is OK to repeat a leaf value
  • 4.0 has a leaf of "0"