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.
âApple has lost a visionary and creative genius, and the world has lost an amazing human being,â the companyâs website reported. Take a look back at photos from his life and career. Related: The Man Who Invented Our World Photograph by Ryan Anson/AFP/Getty Images. Back in Action, 1996 Though Steve Jobs founded Apple in 1976, he left in 1985 amid a power struggle. In 1996, Jobs returned when Apple bought his company NeXt. Here, he announces plans to shake the company out of the financial doldrums on Nov. 10, 1997, in Cupertino, Calif.