Statistical tools for controlling quality

THE MANUFACTURER is always faced with the problem of getting the maximum output from his available equipment, material, and man power. This means operating with a minimum amount of scrap production or producing a minimum amount of products which fall outside of specification limits and which will require reworking. But since tools of production are subject to wear, and since materials vary in quality or characteristics, the manufacturer must have a means of predicting the probable quality of products he is likely to get sometime in the future.