Edexcel GCSE Statistics · 1ST0
Specification 2e.01, 2e.04, 2f.02 · Paper 1, Paper 2
An estimate made outside the range of the available data, where the observed pattern may not continue.
Revise: Interpreting resultsPredicting the time for a £1500 computer would be extrapolation, because its price is outside that range. This is less reliable: the relationship may not continue beyond the prices investigated. A line that fits the available data is not a guarantee about unobserved values.
- Revise: Correlation vocabulary
Estimating a value by extending a relationship beyond the range of the observed data.
- Revise: Lines of best fit
Estimating a value using a model outside the range of the observed input values.