Edexcel GCSE Statistics · 1ST0
Specification 2b.01 · Paper 1, Paper 2
Revise: Calculating averages for discrete and grouped dataWeighted mean, geometric mean and mean seasonal variation are Higher-tier content.
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GCSE Statistics · key term
The arithmetic mean of seasonal variations for the same season or corresponding point in successive cycles; also called estimated mean seasonal variation or average seasonal effect.
Used by Edexcel
Specification 2b.01 · Paper 1, Paper 2
Revise: Calculating averages for discrete and grouped dataWeighted mean, geometric mean and mean seasonal variation are Higher-tier content.
For mean seasonal variation, calculate actual value minus trend value, keeping negative signs, and average only variations for the same season.
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