© Nuffield Foundation 2012 Nuffield Mathematics Activity DISCUSS regression and correlation CC...
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Transcript of © Nuffield Foundation 2012 Nuffield Mathematics Activity DISCUSS regression and correlation CC...
© Nuffield Foundation 2012
Nuffield Mathematics Activity
DISCUSS regression and correlation
CC Rudolf Stricker
© Nuffield Foundation 2010
DISCUSS regression and correlationHeight
Age of plant
Plant heights
How does the value of a car depend on its age? Price
Age of car
Depreciation in value of cars
This activity is about finding relationships between variables and measuring their strength.
How does the height of a plant depend on its age?
Use the following online tutorial to learn about regression and correlation:
DISCUSS regression and correlation
http://www.icse.xyz/discuss/regression/
Reflect on your workExplain what is meant by ‘regression’ and ‘correlation’.
What is the difference between interpolation and extrapolation?
DISCUSS regression and correlation
If you find that r = 1, what can you say about the relationship between the variables?What if r = –1?What might a value of r near to zero indicate?
Correlation does not imply causation. Explain what this means. Suggest a real-life example.