REGRESSION ANALYSIS

Regression analysis is a way to measure the relationship between two or more sets of data. Linear regression attempts to explain a relationship by fitting a straight-line to the data, then extending that line to predict future values.

The most common method for fitting a regression line is the method of least-squares. This method calculates the best-fitting line for the observed data by minimizing the sum of the squares (“least squares”) of the vertical deviations from each data point to the line.

Complete defintion with equations (in new window).