An advantage of the supremum log-rank over the standard log-rank statistic is an increased sensitivity to a wider variety of stochastic ordering alternatives. In this article, we develop a formula for ...

We present a simple sample-size formula for weighted log-rank statistics applied to clustered survival data with variable cluster sizes and arbitrary treatment assignments within clusters. This ...

Learn how to recognise and interpret algebraic notation with this BBC Bitesize Maths article. For students between the ages of 11 and 14. Functions Learn how to find both the inputs and outputs of ...

A ratio compares two or more quantities by using parts of a whole. In this bracelet, there are 2 parts red compared to 3 parts blue. The ratio of red beads to blue beads is 2 : 3. This is said aloud ...

OKLAHOMA CITY (AP) - State lawmakers are in the early stages of possibly changing Oklahoma’s complex school funding formula, which has remained virtually unchanged for 36 years despite major shifts in ...