Problem 122 of 7
Explain why residuals help evaluate model fit for scatter plot with possible nonlinear trend.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
connect residuals to prediction errors.
Hidden until you reveal it.
Explanation must connect residuals to prediction errors and model fit.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Define a residual as prediction error.
2. Explain that small random residuals indicate better fit.
3. Explain that patterns or large residuals signal model problems.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Saying residuals prove causation or only measure correlation.