Full Changelog

23.1 released December 16, 2023

  • Durbin-Watson Statistic - Added the Durbin-Watson statistic to the diagnostics. This is a measure of auto-correlation in the residuals.

  • Fixed unhandled exception when editing the constraints.

  • Removed bold lines that appear when transposing tables in the Point Prediction report.

  • Fixed a crash in Numerical Optimization when a categorical factor is present.

  • Fixed a crash when using the Excel import feature with a file that is not an Excel file.

  • Adding a new graph via the + button in Custom Graphs now works consistently.

  • Fixed a crash in the analysis of Equation-Only responses.

  • Rebuilding a design with discrete factors no longer warns about unique numeric values.

  • The Ramps view in Numerical Optimization now shows the solution correctly when the Logit transform is applied.

23.0 released October 15, 2023

  • Gaussian Process Models for Noisy Responses - Gaussian Process models are now available for responses with noise. Stat-Ease 360 only.

  • Lifetime Analysis with Weibull (Python) - A Python script that can perform lifetime analysis with a Weibull fit is available in the Script dialog. Stat-Ease 360 only.

  • Transpose Tables - Most tables in the software can now be transposed by right-clicking on the top-left header cell.

  • Analysis Summary - Added Lack of Fit and Curvature p-values to the Analysis Summary table.

  • Excel Import/Export - You can now import from, and export to, Excel files in Design-Expert. Previously was Stat-Ease 360 only.