← 5.1 Data Interpretation (Grouped Data)
Grouping data and choosing a class width
Mathematics · Grade 9 · about 40 minutes
Divide the range by the number of classes you want, then round to something tidy.
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- 9 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
- Grouping data and choosing a class width
- The frequency distribution table
- The modal class
- The mean of grouped data
- The median of grouped data
- Choosing and interpreting an average