Cubic Regression app for iPhone and iPad

The Cubic Regression app computes the Cubic equation and computed (x,y) data points.

The Data Entry Screen for the Cubic Regression App has two data entry fields for the x: and y: data points

The app computes the Cubic Regression equation and computed (x,y) data points.the linear regression equation has an equation of the form y = ax3 + bx2 + cx + d where X is the explanatory variable and Y is the dependent variable. .

The app has a touch enabled graph. Upon touching the graph a vertical line appears. Move the vertical line to the left or right to display the computed (x,y) data pairs.