The Application of Statistical Methods to the Quality Control of Manufactured Products

JSGT_1933_V17_T239_T259

Utilising data obtained in different laboratories from thermal endurance tests on glass rods of various diameters, some of the simpler statistical methods of analysis are illustrated. The principles underlying the determination of limits to be used in quality control charts are considered, and the adaptability of these charts to the scrutiny of routine test data emphasised. Reference is made to methods of testing the significance of two estimates of a correlation coefficient.

B. P. Dudding & I. M. Baker