Glossary
Introduction
Revision
Types of variables
Box plots
Shapes of distributions
Use of medians and means
Finding random numbers on a scientific calculator
Finding random numbers on a graphics calculator
Sampling variability
Resampling
The difference between two medians (or means)
Computer program output
Does sample size make a difference?
Setting up your investigation
1 Select suitable data
2 Pose an appropriate question and identify the population
3 Define the variables
4 State the purpose and who would find it useful
Describe and compare sample distributions
Compare the centres
Compare the shapes
Compare the positions, sizes and overlaps of the spreads
Describe any unusual features
Making a formal inference about the difference between the medians
Making a formal inference about the difference between the means
Communicate your findings in a conclusion
Writing about statistical inference
Pick the errors
What is the population?
Putting it all together
Annotated example
Practice tasks
Answers
Data Cards
Removable section in centre of book
Charlotte Walker BEd, GradDipTchLn, MHealSc.Charlotte has over 10 years' experience in teaching Mathematics.
Victoria Walker BSc (Hons), GradDipTchLn. Victoria has twenty years' experience in teaching Mathematics. She has received a Jim Campbell award for teaching excellence (2003) and an Ernest Duncan award in Mathematics (2007).
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