Regression Analysis is a statistical approach to help forecasting change in a dependent variable based on change in a number of independent variables. Known also since curve fitting as well as line fitting just because a regression analysis equation can be utilized in fitting the curve or brand to data points, in a manner such that the differences within the distances of data points from curve. Relationships depicted in a regression analysis are usually, however, associative just, and any cause-effect inference can be purely subjective.