Scaffolded activity ranging from basic calculations in a full grid to sorting raw data into groups to then analyse. There's also an in-built extension task for students to compare the actual mean with the estimate for question 4 and explain why. [Edited: Q1 corrected from 20-30 to 20-29 11/3/14]
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The midpoints need fixing
A good resource. Although you will need to change the bounds from 20-30 to 20-29 on Q1 if you are using it with a class. Thanks for sharing :-)
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