Probability and statistics

Essential Mathematics Year 9

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This video takes a look at the ways we can measure the spread of data about the median. It first looks at the range. It looks at how to calculate it and why it's not very useful when there are outliers. It moves on to look at the Interquartile Range. It shows how to find the IQR and what each of the parts mean. It also looks at how the IQR removes the problems created by the outlier. This video is part of the Year 9 series on Mathematics.

Video tags

interquartile range
year 9
interquartile range statistics
good maths websites
IQR
finding the interquartile range
lower quartile
upper quartile and lower quartile
upper quartile
statistics
finding the range
what is an outlier
outlier
Year 9 maths
measures of spread
measures of spread statistics
measures of spread and center