The project on the teaching of statistics in UK universities has two phases. In phase 1 various data sources are explored and the "Directory of Academic Statisticians" is identified as the most reliable source of data on statistics teaching staff. The number of staff in core mathematical science...

We consider nonnegative invariant quadratic estimation of variance components and prove that if there does not exist a nonnegative quadratic unbiased estimator of variance components, there does not exist a nonnegative invariant quadratic estimator with a global minimum bias. The result...