Regress+ v2.8: Mathematical Modeling for MacOS

Equations Kepler -- Mars Daytime H2+ Hale-Bopp CN Michaelis-Menton Antoine Spectral Peak		Distributions Batting Averages Hyphens Dice Rolls Salaries Laplace&Laplace1 Goodness-of-fit 10,000 Gammas
Click an example.

Traditional, Univariate Data Modeling: Equations and Distributions

• Plain textfile input
  - Equations, with or without uncertainties (weights)
  - Distributions, continuous or discrete data
  - Discrete data grouped or ungrouped
• Datasets up to 4,294,967,295 points (minimum 7)
• Up to 10 parameters
• User-selected optimization criterion (where appropriate)
  - Least squares
  - Minimum average abs(residual)
  - Maximum likelihood
  - Minimum K-S statistic
  - Minimum chi-square statistic
• Full, dated Report (textfile)
• Robust goodness-of-fit testing for distributions
  - Tunable precision
• [Optional] State-of-the-art (BCa) central confidence intervals (90, 95 and 99 percent)
  - Tunable precision
• High-quality (PDF, PNG) plots with one keystroke!
  - X/Y plot, with or without error bars
  - PDF plot
  - CDF plot
  - Probability plot for goodness-of-fit (see above)
  - [Optional] Logarithmic axes (when appropriate)
  - Editable axis labels
  - Automatic tick marks/labels (see above)
• [Optional] Predictions for unobserved values or percentiles
  - With confidence intervals if desired
• [Optional] Constant parameter(s)
• 21 Built-in Equations
  - Plus user-defined model
  - [Optional] Test residuals for systematic error
  - [Optional] List data with fitted estimates and residuals
  - [Optional] Simulated-annealing mode for initial parameter estimates
• 59 Built-in Distributions
  - 9 continuous, symmetric
  - 27 continuous, skewed
  - 11 continuous mixtures
  - 6 discrete
  - 6 discrete mixtures
  - [Optional] Creation of synthetic samples
• No hidden assumptions anywhere
  - No approximations, apart from those common to sampling and bootstrapping generally
  - No data transformations of any kind
• Extensive documentation
  - Data Modeling with Regress+ (PDF, 90 pages, 43 figures, 14 tables)
  - Compendium of Common Probability Distributions (PDF, 136 pages, 59 figures, also published separately)
  - Sample input files
• Completely free! No cost, no license, no registration.

Platform Requirements

Download

Regress+ ("Regress_plus") v2.8.4, signed and notorized, (34.9 Mb disk image, from causaScientia.org)

Regress+ v2.8 for MacOS 10.11 (El Capitan) -- 12 (Monterey)

Regress+ ("Regress_plus") v2.8.3, signed and notorized, (20.2 Mb disk image, from causaScientia.org)

For older Macs, Regress+ 2.5.3 is still available (but unsupported) here.

View the Documentation.

Who Uses Regress+ ?