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Regression Analysis - DataFitting
DataFitting is a powerful statistical analysis program that performs linear and nonlinear regression analysis (i.e. curve fitting).

SimplexNumerica
2D/3D technical graphics plotting and data analysis software for your plotting needs. Curve fitting, FFT and a presentation software! Download a demo of our analysis and plotting software!

LAB Fit Curve Fitting Software
Curve fitting (fit), nonlinear regression, treatment of data, basic statistics, error propagation, 2D and 3D graphs, confidence band, uncertainty, error bars, extrapolation, chi-square, correlation coefficient tests, covariance matrix, math tools.

FindGraph
FindGraph is comprehensive, feature-rich graph editor, as well as a curve fitting and digitizing tool for engineers, scientists and graduate students. Discover the model that describes your data the best.

DataFitX
DataFitX is a COM component (in-process ActiveX DLL) which allows you to add a powerful nonlinear regression (curve fitting) engine to your software with just a few simple lines of code in any software or development environment that supports COM.

Regression Analysis - CurveFitter
CurveFitter program performs statistical regression analysis to estimate the values of parameters for linear, multivariate, polynomial, exponential and nonlinear functions.

DataFit
DataFit is a tool for performing curve fitting, statistical analysis & data plotting. Fit equations with up to 100 parameters to data with up to 20 independent variables. Define your own equations or choose from over 600 pre-defined equations.

Advanced Grapher
Graphing, curve fitting and calculating software. Graphs Cartesian, polar and parametric functions, graphs of tables, implicit functions and inequalities. Calculus features: regression analysis, derivatives, tangents, normals and more.

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