This is a look at comparing grouped and non grouped data in terms of finding the mean. This is a great way of promoting understanding of averages, but data in general as well as consolidating previous learning. It also comes with a challenging starter, learning objectives, activity with answers and plenary.
I teach the following lessons on averages in the following sequence:
1. Basic Averages (mode, median, mean) and the Range
2. What average is best (rich task)
3. Grouped Data - Finding the estimated mean
4. Grouped vs Non Grouped data (practical lesson)
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