cancels out, and then take the ratio of two variables that depend on scale, so that scale cancels out.The most familiar pivotal quantity is the Student's t-statistic, which can be derived by this method and is used in the sequel.

Known mean, known variance

A prediction interval [l,u] for a future observation X in a normal distribution N(u,?²) with known mean and variance may be calculated from

1.Previous
3.Next