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.
A Simple Explanationâ¦. Factor analysis is a statistical procedure used to identify a small number of factors that can be. used to represent relationships among sets of interrelated variables. For example, COMPUTER. USE BY TEACHERS is a broad construct that can have a number of FACTORS (use for testing, use for research, use for presentation development, etc.). BASIC ASSUMPTION: underlying dimensions â or factors â can be used to explain complex. events or trends.