Question

based on the scatter plot below, which is a better prediction for y when x = 4? 10 0

Explanation:

Step1: Observe the scatter - plot

Locate the x - value of 4 on the x - axis.

Step2: Estimate the y - value

See where the points cluster around x = 4. The points around x = 4 seem to cluster around y - values between 2 and 6. A value of 0 is too low and 10 is too high compared to the distribution of points at x = 4.

Answer:

0 is not a good prediction as the points at x = 4 are not near y = 0. 10 is also not a good prediction as the points at x = 4 are not near y = 10. But if we have to choose between 10 and 0, based on the scatter - plot, since the points at x = 4 are mostly above y = 0, 10 is a 'better' (though still not perfect) prediction compared to 0. So the answer is 10.