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.
These tools come from the area of statistics and are used to help. identify quality problems in the production process as well as in the product itself. Statistical quality control is the subject of this chapter. Statistica1 quality control (SQC)is the term used to describe the set of statistical. tools used by quality professionals.