The direction of a correlation is either positive or negative. In a negative correlation, the variables move in inverse, or opposite, directions. In other words, as one variable increases, the other variable decreases. For example, there is a negative correlation between self-esteem and depression. In other words, the higher your self-esteem, the lower your feelings of depression.
Excel Communications was founded in 1988 by Dallas entrepreneur Kenny Troutt as a long distance reseller in the US telecom sector at the birth of telecom deregulation.
Short for Hewlett-Packard, one of the world's largest computer and electronics companies. Founded in 1939 by William Hewlett and David Packard, HP is best known today for its line of LaserJet and DeskJet printers. However, it produces more than 10,000 different products, ranging from computer systems to specialized electronic devices.