Probability and statistics
Essential Mathematics Year 9
This video is a recap of all the work which has gone before on Mean, Median, Mode and ... well ... that's it really as we're only dealing with the measures of centre. The range and IQR are known as the measures of spread. This video looks at how to find the Mean, Median and Mode and then it tries to thwart Barry by showing you how you can find missing numbers when they tell you the mean changes, but not the size of the new number. It's a great video to start Year 9 learning with.
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Video tags
Summarising data: measures of centre
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how to find the mode
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central tendency