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.

Nonparametric profile monitoring (NPM) is for monitoring, over time, a functional relationship between a response variable and one or more explanatory variables when the relationship is too ...

This paper establishes a criterion that measures approximately the average net income of a process under surveillance of an X̄ chart when the process is subject to random shifts in the process mean.

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 ...

Often, however, “quality assurance” and “quality control” are used interchangeably, referring to the actions performed to ensure the quality of a product, service or process.

Key Points Trend charts are used to see the changes throughout a process. They come in different forms like the run, control, and time series charts. Trend charts are used to monitor your process ...