“Stemplot” is just another way to say Stem and Leaf Plot. The Stem is main part of the diagram, hence it has become shorthand to just mention a stemplot. Regardless, you treat them the same. Stemplots are a very robust and effective way to illustrate data, even though they look quite simple. Stemplots can take a long, complicated list of many data points and categorize them in an easy to read format.
Stemplot with Decimals
Stemplots are actually more useful than some give them credit for. They are usually only shown indicating two digit numbers. Not only can they be used to show three digit numbers, they can also be used with decimals. To use stemplots with decimals, the leaves become the decimal points.
For the data set: 23.2, 23.4, 23.8, 24.1, 24.9, 25.0, 25.1, 25.1, 25.1, 25.3, and 25.8, the stem and leaf plot would look as follows.
Note that the stems are the two digit numbers and the leaves are the decimal points. It is crucial when you use stemplots to include a key. In this instance, the key indicates that the sample data point is in fact a decimal number, not a three digit number.
Can You Split the Stem with Stemplots with Decimals?
Absolutely! If you have a particularly large data set, you can still split the stem. The same rules apply.
Is it OK to Use a Back to Back Stemplot With Decimals?
Yes. Similar to splitting the stem, you can use a back to back stemplot if you have a second data set.