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.
Melvil Dewey: Melvil Dewey, American librarian who devised the Dewey Decimal Classification for library cataloging and, probably more than any other individual, was responsible for the development of library science in the United States. Dewey graduated in 1874 from Amherst College and became acting librarian at