Curve Fitting

Applying the Built-in Regression Methods To Specific Variable Pairs

  • This feature enables defining and storing the built-in methods for specific pairs of variables, and allows displaying more than one curve fit method for the same variable pair or for different ones on a given graph.
  • The pre-defined regression functions that can be used for dynamic linking of regression elements to a chart pane include:
  • Linear:
    • X on Y
    • Thru origin
    • Major axis
    • Reduced major axis (RMA)
  • Polynomial
  • Exponential
  • Logarithmic
  • Power
  • Cubic spline interpolation
Example Graph

Ternary Error Region