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.
You can type in a formula (though you have to be sure it's exactly right) or you can use Excel's preset formulas called functions. If you type in the formula, you must start with an equal sign, so Excel knows that the data in the cell is a formula. After the =, what comes next depends on what youâre trying to do. If you were multiplying numbers, you would just type in the appropriate numbers and mathematical symbol (* for multiply).