Linear RegressionIn statistics, linear regression is a method of estimating the conditional expected value of one variable y given the values of some other variable or variables x. Regression, in general, is the problem of estimating a conditional expected value.
The Linear Regression study analyses the data on-screen (not any data off screen) and, by the method of least squares, plots the straight line that best fits the visible data with the formula
where Sx is the sum of X at each position, Sxy is the sum of X x Y at each position, and so forth. |