The assumed mean method
Essential Mathematics · Grade 11 · about 40 minutes
Use an assumed mean to find the mean of grouped data with smaller numbers.
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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
- Why we collect data
- Tally and frequency
- Grouping into classes
- A grouped frequency table
- Histograms
- Frequency polygons
- The mean from midpoints
- More mean practice
- The assumed mean method
- Choosing a working mean
- The modal class
- Estimating the mode
- Cumulative frequency
- The median of grouped data
- More median practice
- Which average to use?
- When the mean misleads
- The mean of two groups
- Adding or removing a value
- Choosing the class size
- Application: test marks
- Application: community data
- Application: farm and business
- A group data project
- Statistics: mixed review