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Sections

Statistics

Pick a section. You read the idea first, then answer questions on it.

1. Summarising grouped data1 ideaRead

2. Before you start1 ideaRead

3. The class mark of a class interval1 ideaRead

4. The modal class1 ideaRead

5. The median class1 ideaRead

6. Mean of ungrouped data1 ideaRead

7. Median of ungrouped data1 ideaRead

8. Mode of ungrouped data1 ideaRead

9. Mean of grouped data: the direct method1 ideaRead

10. Mean of grouped data: the assumed-mean method1 ideaRead

11. Mean of grouped data: the step-deviation method1 ideaRead

12. Mode of grouped data: the formula1 ideaRead

13. Median of grouped data: the formula1 ideaRead

14. Any assumed mean gives the same mean1 ideaRead

15. Read the frequencies either side of the modal class from the right rows1 ideaRead

16. Worked: mean by the direct method1 ideaRead

17. Worked: mean by the assumed-mean method1 ideaRead

18. Worked: mean by the step-deviation method1 ideaRead

19. Worked: a missing frequency from a known mean1 ideaRead

20. Worked: mode of grouped data1 ideaRead

21. Worked: median of grouped data1 ideaRead

22. Recap1 ideaRead

23. Where you will meet this1 ideaRead

24. Practice set: Exercise 13.11 ideaRead

25. Practice set: Exercise 13.21 ideaRead

26. Practice set: Exercise 13.31 ideaRead