A box plot is formed from a horizontally elongated rectangle with a vertical lines positioned within it. At each end are horizontal lines with vertical end stops. Each vertical line represents an important values within the data set: lowest, lower quartile, median, upper quartile, highest. Outliers will be indicated beyond the end stops by dots or crosses. Box plots are a useful visualisation of the spread of a data set and for comparing data sets.
- Box Plots
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Box plot
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Box plot
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Box plot
(Care of mmerevise.co.uk) - Box plots- draw/interpret Video
- Practice Questions
- Textbook Exercise
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- Box plots (compared) Video
- Practice Questions
- Textbook Exercise
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