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GCSE Statistics · key term
The value marking the upper quarter of an ordered dataset, with about three quarters of the values below it, written as .
Used by Edexcel
Specification 2a.09, 2c.01, 2c.02 · Paper 1, Paper 2
The value three-quarters of the way through an ordered distribution, also written UQ or .
Revise: Determining skewnessA box plot marks the lower quartile, median and upper quartile. Its box contains the middle 50% of the data.
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The boundary marking approximately the lowest 75% of an ordered data set, written or UQ.