Excerpt from On a Problem of Fixing the Level of Independent Variables in a Linear Regression Function In the practical application of statistical techniques to industrial or business problems, it often happens that we want to find an appropriate level of the policy or control variable (or vector of control variables) 2, so that some quantity Y may be as near to some prescribed level c as possible. If the relation of Y and Z is described by a stochastic model which includes some unknown parameter 9, and if we have a set of observations on Y and 2, then a problem of mathematical statistics, or of statistical decision, can be formulated. We want to find a policy function Z based on the observations so that the error may be stochastically as small as possible. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.