analytic technique for determining relationship between a dependant variable and a independant variable. When the two variables have a linear correlation, you can develop a simple mathematrical model of the relationship between 2 variables line of best fit
Line of best fit
The exact formula to finding the line of best fit is by:
- finding residuals
- # of points deviating from the line of best fit, the smaller the square of each of these points, the better the correlation of the line of best fit is. b = a =
value between points: interpolation values outside of data points: extrapolation