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GCSE Mathematics · key term
The class interval containing the greatest frequency in grouped data.
Used by AQA, Edexcel and OCR
Specification S4 · Paper 1, Paper 2, Paper 3
The class interval with the greatest frequency in grouped data.
Revise: Measures of Central Tendency and SpreadWhen data has been grouped into intervals, the individual values are hidden, so an exact mode generally cannot be found. Instead, state the modal class: the class interval with the greatest frequency.
Specification S4 · Paper 1, Paper 2, Paper 3
The modal class is the class interval with the greatest frequency, not the interval containing the greatest values.
Give a modal class as the complete interval, including its inequality signs.
Keep interval notation in an answer for a modal class; do not replace the interval with its midpoint.
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For grouped data, exact individual values are unavailable, so a modal class may replace a single mode and the mean must be estimated.
Specification 12.03a · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
The class interval containing the greatest frequency.
Revise: Averages and Range for Ungrouped and Grouped DataFor grouped data, the exact most frequent value cannot normally be identified. Instead, give the modal class, which is the interval with the greatest frequency.