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GCSE Statistics · key term
Estimating a value using a relationship within the range of the observed data.
Used by Edexcel
Specification 2e.01, 2e.04 · Paper 1, Paper 2
An estimate made within the range of the available data.
Revise: Interpreting resultsThis is interpolation because £600 lies within the data's price range, £220 to £900. It is still an estimate: individual computers can perform differently from the fitted pattern.
To distinguish interpolation from extrapolation, compare the value used for the prediction with the range of the observed data, not the limits printed on the axes.
Justify interpolation or extrapolation by comparing the input value with the observed data range.
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Estimating a value using a model within the range of the observed input values.