DataFitting

The latest version of DataFitting, 1.7.56, is a robust and advanced statistical analysis program. Developed by the Institute of Mathematics and Statistics, this software, with file names CFitter1.exe, and datafitting.exe, is small but mighty, weighing only 1.3 MB.

DataFitting is an excellent tool for performing both linear and nonlinear regression analysis, allowing users to determine the parameters of an equation that best fits their data values. The program excels in handling complex linear, polynomial, exponential, and nonlinear functions, even when they cannot be linearized. This makes it a valuable resource for a wide range of users, including students, teachers, engineers, and researchers who need to quickly find the best equations that describe their data.

This software belongs to the Education category, specifically under Science Tools, and supports a broad range of operating systems including Windows XP, Vista, 7, 8, 10, and 11. Previous versions such as 1.7 helped lay the foundation for the advancements seen in the latest release.

With a built-in library containing a vast array of linear and nonlinear models, DataFitting allows users to select from simple linear equations to high-order polynomials. Once data fitting is completed, the program graphically reviews and sorts the fitted equations by their Standard Error. Users can preview their graphs and output publication-quality visualizations in various configurations, which is highly beneficial for presenting findings clearly.

A standout feature is the 38-digit precision math emulator, which is essential for accurately fitting high-order polynomials and rationals. Moreover, DataFitting boasts a robust fitting capability for nonlinear fitting that effectively manages outliers and a wide dynamic Y data range.

Pros:

1. User-friendly interface with a built-in library of models.
2. Graphical review of curve-fit results with high precision.
3. Handles complex nonlinear functions that are otherwise hard to linearize.

Cons:

1. Only available on Windows OS.
2. Advanced features may have a steep learning curve for beginners.

For those searching for a free download of a statistical analysis tool that performs both linear and nonlinear regression analysis, DataFitting offers a comprehensive solution.

You may want to check out more software, such as Trachtenberg Speed Math, MathMatic or MemBrain, which might be similar to DataFitting.