Which average to use?

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• 8 sections of explanation, worked examples and diagrams
• 1 practice task with hints and worked answers
• A quiz that marks itself as you go
• Your progress kept across every subject you take

Other lessons in this sub-strand

1. Why we collect data
2. Tally and frequency
3. Grouping into classes
4. A grouped frequency table
5. Histograms
6. Frequency polygons
7. The mean from midpoints
8. More mean practice
9. The assumed mean method
10. Choosing a working mean
11. The modal class
12. Estimating the mode
13. Cumulative frequency
14. The median of grouped data
15. More median practice
16. Which average to use?
17. When the mean misleads
18. The mean of two groups
19. Adding or removing a value
20. Choosing the class size
21. Application: test marks
22. Application: community data
23. Application: farm and business
24. A group data project
25. Statistics: mixed review