Quality control is a process by which a business ensures that product quality is maintained or improved. Learn whether quality control is a career option for you.

Types of Control Charts There are two main types of control charts that utilize the mean and standard deviation as some of the quality determinant parameters.

Control chart- a time-ordered plot of sample statistics, used to distinguish between random and nonrandom variability Control limits- the dividing lines between random and nonrandom deviations from ...

L. Allison Jones-Farmer, Jeremy D. Ezell, Benjamin T. Hazen, Applying Control Chart Methods to Enhance Data Quality, Technometrics, Vol. 56, No. 1 (February 2014), pp ...