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.
1. SCRABBLE WAS INVENTED BY AN ARCHITECT. In 1933, New York City architect Alfred Mosher Butts created an early version of the game we know as Scrabble. To determine how many tiles there should be and how many points each letter should be worth, he calculated letter frequency on the front page of The New York Times.