Shelf Life Estimation

Shelf life estimation is performed by determining where the 95% lower and upper confidence or prediction interval intersects with the user-defined specification limits. If either Model 2 or Model 3 has been selected, shelf life is estimated separately for each batch. Shelf life is then defined as the shelf life associated with the worst-case batch, that is, the smallest shelf life estimate. By default, Statistica® bases shelf life computations on a two-sided 95% confidence interval.