provided in a control system is to allow manual override of remote installations, either by a serial communication. link, modem, radio or other type of interface. In these installation the field device may be manually controlled until a. problem is corrected or until maintenance personnel can visit the site.
â¢ Doctors want to know how much hearing damage results from loud music. â¢ Teachers want to know whether or not listening to classical music helps students perform better on tests. Statistical investigations are used every day for a variety of reasons.
No. InfoComm uses statistical data on how. each test question performs to evaluate the. difficulty of each examination form. The. examinations are carefully constructed in. order to minimize variations in difficulty from. one test form to another. However, it is.