1. The Frogs Lesson Using the available data to gain information A resource from CensusAtSchool www.censusatschool.ntu.ac.uk

2. Ready ?

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4. How many frogs?

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7. How many frogs?

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10. How many frogs?

11. Learning Objectives Discuss problems that can be addressed by statistical methods, and identify related questions to explore. Determine sample sizes and degree of accuracy needed. Calculate statistics from data, mean, mode and median. Data collection: tally charts. Consider grouped data and statistics from these.

12. Problems; Find 4 numbers with a mean of 6 Find 4 numbers with a mean of 6 and a mode of 5 Find 4 numbers with a mean of 6, a mode of 5 and a range of 16 Find 4 numbers with a mean of 7, a mode of 8 and a median of 8. Create a data set where the mean is twice the median Write down 5 numbers where the mode is 7, median is 8 and the mean is 9 Find a set of 10 numbers that has a mean of 4.2 and is made up only of integers Make up 4 problems about averages like these ones.

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14. 2 16

15. 3 44