AQA GCSE Geography · 8035
Paper 1, Paper 2, Paper 3
Revise: Descriptive Statistics: Central Tendency, Spread and PercentagesQuartiles divide ordered data into four parts.
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GCSE Geography · key term
A value dividing ordered data into quarters. The lower quartile is at approximately 25%, the median at 50% and the upper quartile at 75%.
Used by AQA and OCR
Paper 1, Paper 2, Paper 3
Revise: Descriptive Statistics: Central Tendency, Spread and PercentagesQuartiles divide ordered data into four parts.
Specification 9.3 · Paper 1, Paper 2, Paper 3
A boundary dividing ordered data into quarters. The lower quartile, , has approximately 25% of values below it; the upper quartile, , has approximately 75% below it. The median is the second quartile.
Revise: Measures of Central Tendency and SpreadQuartiles divide ordered data into four parts.
Put individual values in numerical order before finding the median or quartiles. Show which values you used.
Give the units for averages, quartiles, range and inter-quartile range. Percentage change has a % sign, not the original measurement unit.
Plot cumulative frequency at upper class boundaries, not class midpoints. A quartile's cumulative frequency gives its position; read its measurement from the horizontal axis.
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