Sym Statistics


Statistical methods are applied in quality control during production, by quality assurance Assessors using data collected by the manufacturer, and to satisfy the customers about particular consignments. To ensure that the same standard of quality is being applied in each case, a fundamental specification is proposed for the dimensions of clay bricks derived from the results reported in Part I. Examples are given of how statistical methods may be constructed using the fundamental specification as a common basis. For some applications, measurements of the dimensions of individual bricks may be more appropriate than measurements made by placing a number of bricks- in-a-row. Results are given of some practical studies of the precision of several ways of making single-brick measurements, and of the differences between average dimensions obtained by single-brick measurements and by 24 bricks-in-a-row measurements.