Displaying Grouped Data

1. Displaying Grouped Data

2. grouped ungrouped Grouped? When the data gets bunched together (normally because theres a bigger range which makes analysis easier)

3. This is a frequency distribution table for grouped data

4. This is a frequency distribution table for grouped data The “class centre” is the middle of the class Note that the “score” column has changed to the “class” column now

5. Class Intervals

6. Its all about splitting up your data

7. Its all about splitting up your data in a way to avoid bias or skew

8. Its all about splitting up your data in a way to avoid bias or skew this usually means

9. Its all about splitting up your data in a way to avoid bias or skew this usually means picking your classes so that they have an equal number of scores in them (broken up evenly)

12. Histograms and Polygons

13. Histograms and Polygons

14. Exactly the same as normal histograms and polygons

15. Except the class centre goes on the bottom of the column

16. Whassup?