Is the six$-$minute walk distance you predicted for a patient $365$ days into their recovery realistic? Explain in terms of interpolation$/$extrapolation$.$

Extra practice: Which two of these responses make the least sense?

Question options:

No$,$ the model uses observations at $15$ to $90$ recovery days and we have no reason to believe the linear trend continues that far. This is extrapolation.

No$,$ the model uses observations at $15$ to $90$ recovery days and we have no reason to believe the linear trend continues that far. This is interpolation.

Yes, the p$-$values for both intercept and slope are very, very small so predictions can be trusted since we are interpolating.

Yes, the p$-$values for both intercept and slope are very, very small so predictions can be trusted since we are extrapolating.