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Weighted mean — Edexcel GCSE Statistics Definition | GradeGen

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Statistics
Key terms
Weighted mean

GCSE Statistics · key term

Weighted mean

Definition

An average in which values contribute according to their weights: $\bar{x}_w=\frac{\sum wx}{\sum w}$ .

How each exam board covers it

Edexcel GCSE Statistics · 1ST0

Specification 2b.01 · Paper 1, Paper 2

Weighted mean, geometric mean and mean seasonal variation are Higher-tier content.
Revise: Calculating averages for discrete and grouped data

Edexcel Statistics past papers

Related key terms

Arithmetic mean
Class boundary
Class midpoint
Cumulative frequency
Frequency

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∑w∑wx

Used by Edexcel

Linear interpolation

Mean seasonal variation

Measure of central tendency