This is an entire lesson on showing students how to calculate the mean (and mode, median) from a table containing a discrete distribution. The powerpoint shows us why we multiply across the rows by showing the data at the bottom of the screen.
The resource is differentiated at 3 levels and can be written on to allow students to easily and quickly complete their work. Answers not included but, as it on a spreadsheet, a simple cell formula can be used to find all summary statistics
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£1.50