Section 13.2 Summary

1. A confidence interval may be constructed for the mean response for a given value of . The confidence interval takes the form point estimate ± margin of error, where the point estimate is .
2. A prediction interval may be constructed for a random value of for a given value of . This prediction interval is similar to the confidence interval for the mean response , except that the margin of error is always larger. Thus, the prediction interval is always wider than the confidence interval.