A model based on observed x-values from 5 to 20 is used to predict y at x = 50.
The prediction is:
- Acheck_circle
An extrapolation and likely unreliable
- B
Always equal to the mean of y
- C
An interpolation and likely accurate
- D
Independent of the range of x
Explanation
Predicting beyond the observed x-range is extrapolation; the model may not hold there.