The method of least squares is an important statistical tool used to obtain the best values, those containing the "least" errors, of unknown quantities. Commonly used by engineers, business managers, government officials, market analysts and others in...

Statistical method for finding a line or curve—the line of best fit—that best represents a correspondence between two measured quantities (e.g., height and weight of a group of college students). When the measurements are plotted as points...

A procedure for fitting a linear equation to an array of data by minimizing the sum of the squares of the deviations of individual points from the line of best fit. The derived expression is the regression...

Statistical method of determining a regression equation, that is, the equation that best represents the relationship among the...

In regression analysis, least squares, also known as ordinary least squares analysis, is a method for linear regression that determines the values of unknown quantities in a statistical model by minimizing the sum of the residuals (the difference...