an experiment in which ONE variable is changed and the outcome is compared to a standard (control) Standard or Control the basic procedure used in a controlled experiment, before changing any of the variables
The Verizon Building â previously known as the Barclay-Vesey Building and the New York Telephone Company Building â is a 32-story building located at 140 West Street between Barclay and Vesey Streets, going through to Washington Street, in the TriBeCa neighborhood of Manhattan, New York City.
AT&T Corporate Office Headquarters HQ. AT&T is famous for communication services. AT&T's products include wireless voice and data, broadband internet, video, and data, and long distance phone service. AT&T is one of the premier wireless providers for smart phones in the US. AT&T's main competitor is Verizon.