For more information on eligibility for employment-based nonimmigrant visas, see Nonimmigrant (Temporary) Work Visa Options. Your next step is determining how and where to apply for your visa; for more information, see Nolo's article Applying for a Nonimmigrant (Temporary) Visa or get the book U.S. Immigration Made Easy, by Ilona Bray (Nolo).
Statistical process control. Statistical process control (SPC) is the use of statistical methods to assess the stability of a process and the quality of its outputs. For example, consider a bottling plant. The entire system of production that produces filled bottles is termed a process.
A stable process is one that is consistent over time with respect to the center and the. spread of the data. Control Charts help you monitor the behavior of your process to. determine whether it is stable. Like Run Charts, they display data in the time. sequence in which they occurred. However, Control Charts are more efficient. that Run Charts in assessing and achieving process stability. Your team will benefit from using a Control Chart when you want to (Viewgraph 2) Monitor process variation over time. Differentiate between special cause and common cause variation. Assess the effectiveness of changes to improve a process. Communicate how a process performed during a specific period.