Longman Higher Education, 1990. — 132 p.
Motivated by a permanently and rapidly increasing range of applications, statistical reasoning has developed a huge variety of methods. To sharpen insight and to enable easy innovation of new techniques, structurally and hierarchically organized theories seem to be indispensable. The main purpose of this book is to contribute to this goal by investigating some structural properties of statistical experiments irrespective of the complexity of the underlying model.