can an r model have a negative prediction interval? can a prediction interval have a negative lower bound r how to find a predictive interval if lm is negative how do i know that the prediction interval is correct can a prediction interval have a negative lower bound can a 95% prediction interval have an negative lower bound? can a prediction interval have a negative lower bound why is r a prediction interval if r is accurate how do i find the correct prediction interval what is the numerical value of a r prediction interval how many species of islands can have a negative prediction interval what is the r lower bound what should my prediction interval be when the lower bound is negative why do r intervals have a negative range? can an endemic prediction interval have a negative lower bound why do predictors have a negative upper bound what is the lower bound of the prediction interval how can a linear model be used in predicting endemic species what is the lower bound of an r interval why is the prediction interval negative