Question

A 2-column table with 10 rows. The first column is labeled x with entries 0.5, 1, 1, 1.5, 2, 2, 2.5, 3.5, 3.5, 4. The second column is labeled y with entries 1, 1, 2, 3, 2, 5, 4, 5, 6, 7. A graph shows the horizontal axis numbered 1 to 4 and the vertical axis numbered 1 to 7. A line increases from 0 to 4.
The regression calculator shows the relationship between the hours Devin spent playing a video game, x, and the levels he achieved, y.

Which number of hours can be used to make an extrapolation of the level he could achieve?

2
3
4
5

Answer 1

5

Reason: The observed x-values range from 0.5 to 4, so predicting at 5 hours is outside that range (extrapolation). The others (2, 3, 4) are within the data (interpolation).