Understanding and reducing noise from control valves is an important consideration for process facilities, especially those close to residential areas. After years of working with this issue, the ...

A SIMPLE graphical method of calculating standard deviations has been described by Dr. B. Woolf 1. It is sometimes useful, as a means of estimating short-term variations in a process or product, as ...

Most straight-line approximations for data points are found using the method of least squares. This method works for many applications, but it cannot guarantee that the greatest vertical distance ...