Nayland College  Mathematics Home . Year 9 . Year 10 . Level 1 . Level 2 . L3 Statistics . L3 Maths . L3 Calculus . About . Links 
9 
Making Predictions (Achieve) Always predict the dependent variable form a chosen explanatory variable value (Predict a 'y' from a set 'x') DISCUSS in CONTEXT Interpolation is the prediction of values WITHIN the data range using the model. Extrapolation is the prediction of data OUTSIDE the data range. Extrapolation should be treated with caution depending on the context and variables, and especially for nonlinear models. Extrapolation should also match the nature of the data. The precision of the prediction discussed by reviewing the strength of the relationship and the scatter on the graph close to the relevant explanatory data value. (Merit)

Class notes, Class notes McDonalds interpolation and extrapolation Class Exemplar: Class Exemplar: Booklet pg7, 8 
Extrapolation: 

Interpolation: 

(Merit & Excellence) (Excellence comment) 