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# Stem-and-leaf graphs: an introduction

TLF ID L5912

Find out what a stem-and-leaf graph is. Find out what a back-to-back stem-and-leaf graph is. Work through this tutorial to understand the features of stem-and-leaf graphs, and how they are used to display and to compare two data sets. Observe how the mean and median of the data sets can be used to interpret information. Look at examples of different data that can be used in a stem-and-leaf graph. This learning object is one in a series of five learning objects.

#### Educational details

Key learning objectives
• Students explore the features and uses of back-to-back stem-and-leaf graphs to display data.
• Students observe how a stem-and-leaf graph is used to prove or disprove a conjecture.
• Students examine the different uses of a stem-and-leaf graph.
Educational value
• Introduces students to the features and uses of stem-and-leaf graphs.
• Illustrates how data is represented and interpreted in stem-and-leaf graphs.
• Relates conjectures to patterns in back-to-back stem-and-leaf graphs.
• Includes animated graphics to support student learning.
• Includes several examples of type of data used in back-to-back stem-and-leaf graphs.
Year level

7

Learning area
• mathematics
Strand
• Mathematics/Statistics and probability
Concept
• Mathematics/Bivariate data
• Mathematics/Data analysis
• Mathematics/Graphs
Skill
• Knowledge;
• Comprehension;
• Application;
• Analysis
Student activity
• Interactives;
• Experiment;
• Analysis;
• Data manipulation and interpretation;
• Estimation
Learning design
• Experiential learning;
• Independent learning;
• Problem solving;
• Visual learning

#### Other details

Contributors
• Publisher
• Date of contribution: 20 Sep 2013
• Organisation: Education Services Australia
• Address: Melbourne VIC 3000 Australia
• URL: http://www.esa.edu.au/
• Script writer
• Name: Michael Wagner
• Organisation: Godwin + Wagner
• Address: Box Hill South Victoria 3128 Australia
• URL: www.michaelwagner.com.au
• Subject matter expert
• Name: Howard Reeves
• Address: Lindisfarne Tasmania 7015 Australia
• Educational validator
• Name: Graham Jones
• Address: Gold Coast QLD Australia
• Technical implementer
• Organisation: CSIRO Publishing
• Address: Collingwood Victoria 3066 Australia
• URL: www.publish.csiro.au
Access profile
• Colour independence
• Device independence
• Hearing independence
• Generic
Learning resource type
• Interactive Resource
Browsers
• Microsoft Internet Explorer - minimum version: 8.0 (MS-Windows) - maximum version: 9.0 (MS-Windows)
• Firefox - minimum version: (MS-Windows)
• Safari - minimum version: 5.1 (MacOS)
Operating systems
• MacOS - minimum version: 10.6
• MS-Windows - minimum version: XP - maximum version: 7
Rights
• © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.