Question

Melissa collected the data in the table.


When x = 4, what is the residual?

–3
–1
1
3

Answer 1

I don't have the table or the regression/prediction model, so I can't pick the correct number yet. Could you paste the table (or the observed y at x = 4 and the fitted/predicted y or regression equation)?

How to get the residual once I have that:
- residual = observed y − predicted y.
- Example: if the fitted line is ŷ = 2x + 1, then at x = 4 the prediction is ŷ = 9. If the observed y in the table is 6, the residual = 6 − 9 = −3.