Ferrell, Enoch B. (1958, ASQC) Bell Telephone Laboratories, Inc.
This article discusses the use of normal and log-normal probability graph paper plotting experimental data having normal and skewed distributions. Yankees and Giants batting averages are used as an example of normal distribution; transistor currents for skewed distribution. A new concept of limits is introduced to describe the dispersion on skewed distributions.
Statistical process control (SPC)