How did fault-free mass production and the systems manufactured for the defense effort during World War II further the use of statistical methods?

The demands of fault-free mass production and the systems manufactured for the defense effort during World War II furthered the use of statistical methods. That carried over to business and industry in the years following the war. The major empress, in addition to helping ensure manufacturing stability, were on checking that incoming materials met specifications and on rejecting bad product. As organizations began to focus more on customer satisfaction and designing quality into products and processes, it became clear that statistical concepts in general and design of experiments in particular could play an important role in helping build and validate quality products.