1. Stem & Leaf Diagrams

2. Example 1: The following are the results obtained by a group of students in a maths test. Use the stem & leaf diagram to calculate the following: How many students are in the class? What fraction of students scored under 70% in the test? What is the mean, mode, median, range & interquartile range?

3. Example 2: The following are the ages of participants in a 5km race
Example 2: The following are the ages of participants in a 5km race. Use the stem & leaf diagram to calculate the following: How many participants ran the race? What is the mean, mode, median, range & interquartile range?

4. Creating your own Stem & Leaf Diagram
Pick a random number between Represent results in a stem & leaf diagram and then answer the questions below.
How many students are in the class?
What percentage of students chose a number less than 20?
What is the mean, mode, median, range and interquartile range?

5. Back-to-back Stem & Leaf
Height v’s Arm Span: Represent above information on a back-to-back stem & leaf diagram. Then calculate the mean, mode, median, range & interquartile range of both sets of data.
Height
Arm Span