Stem+and+Leaf+Diagram

=__Stem and leaf diagrams__=

What are stem and leaf diagrams?
Stem and leaf diagrams are similar in usage to histogram, presenting grouped data in a graphical form. Stem and leaf diagrams are simply stems on the left, and leaves on the right. The stems usually represent tens, and the leaves, ones. Also, **always check that the number of leaves tallies with the total number of data.** Here is a stem and leaf diagram: You can see that this extends out of the tens digits. For example, the last row, the "20" row, 20 | 0 is 200. However, if the number is too big, you can round off and adjust. For example, 20203 can be represented by 20 | 2. However, the scales then have to change accordingly.

Why use stem and leaf diagrams?
Stem and leaf diagrams are useful for teachers, to rank their students, also, if you need to tabulate the results of surveys, you can also use stem and leaf diagrams. Stem and leaf diagrams can show the distribution of an object like a dot diagram and histogram, but better, since they display grouped data, without losing the individual data.