Edexcel GCSE Statistics · 1ST0
Specification 2d.01 · Paper 1, Paper 2
Revise: Index numbersIn a fixed-base series, the base period stays the same throughout. It might be a year, month or quarter.
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GCSE Statistics · key term
The reference period whose value is assigned an index of 100 in a fixed-base index series.
Used by Edexcel
Specification 2d.01 · Paper 1, Paper 2
Revise: Index numbersIn a fixed-base series, the base period stays the same throughout. It might be a year, month or quarter.
Identify the comparison period first: a fixed-base index uses the stated base period; a chain-based index uses the immediately preceding period.
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