Question 1
Paper 1Easy5 marksA technician records the volume of water in a reservoir during a filling test.
| Time, (min) | 0 | 5 | 10 | 15 |
|---|---|---|---|---|
| Volume, (L) | 18 | 31 | 43 | 56 |
The technician proposes a linear model
(a)[1]
State one feature of the measurements that supports the use of a linear model.
(b)[2]
Using the measurements at and show that the fitted model is
(c)[1]
Hence estimate the volume of water after 12 minutes.
(d)[1]
State whether using the model to predict the volume after 24 minutes is interpolation or extrapolation.