8.1 Introduction to MORISTAT
MORISTAT is a self-contained, browser-based econometric software suite. It implements the full numerical core of a validated C program, providing publication-quality regression analysis directly in your browser — no installation, no server, no internet connection required after the page loads.
Key Features:
- Zero Installation: Runs in any modern web browser
- Validated Numerical Core: Cross-checked against established econometric software
- Complete Diagnostic Suite: VIF, Breusch-Pagan, Durbin-Watson, Jarque-Bera, Newey-West HAC
- Advanced Models: IV/2SLS, Panel Data, Logit/Probit, Tobit, Count Data
- Machine Learning: Ridge, Lasso, Elastic Net
- Interactive Visualization: Residual plots, coefficient plots, survival curves
- Export-Ready: Save results as TXT, copy to clipboard
Design Philosophy
| Principle | Implementation |
|---|
| Accessibility | Browser-based, no installation required |
| Transparency | Full source code visible and inspectable |
| Rigor | Validated numerical algorithms |
| Completeness | Introductory and advanced methods |
| Practicality | Real-world case studies included |
8.2 Software Architecture
Core Components
- Numerical Core: Matrix operations, OLS, MLE, GMM, Bootstrap
- Model Library: Logit, Probit, Tobit, Poisson, NB, Cox PH, Ridge, Lasso, SAR, SEM
- Diagnostic Suite: VIF, BP, DW, JB, HAC, RESET, Link, Hausman
- UI Layer: Interactive tabs, data editor, export functionality
Data Flow
┌─────────────┐ ┌─────────────┐ ┌─────────────┐
│ Data Input │ ──► │ Model │ ──► │ Results │
│ (CSV/Grid) │ │ Selection │ │ Display │
└─────────────┘ └─────────────┘ └─────────────┘
│ │ │
▼ ▼ ▼
┌─────────────┐ ┌─────────────┐ ┌─────────────┐
│ Variable │ │ Estimation │ │ Export │
│ Selection │ │ (OLS/MLE) │ │ (TXT/CSV) │
└─────────────┘ └─────────────┘ └─────────────┘
8.3 Models Implemented
| Model | Method | Status |
|---|
| OLS | Ordinary Least Squares | ✅ Complete |
| IV/2SLS | Instrumental Variables | ✅ Complete |
| Fixed Effects (FE) | Within transformation | ✅ Complete |
| Random Effects (RE) | GLS | ✅ Complete |
| Logit/Probit | MLE | ✅ Complete |
| Multinomial Logit | MLE | ✅ Complete |
| Ordered Logit/Probit | MLE | ✅ Complete |
| Tobit | MLE | ✅ Complete |
| Poisson/NB | MLE | ✅ Complete |
| Cox PH | Partial Likelihood | ✅ Complete |
| Ridge/Lasso | Regularized OLS | ✅ Complete |
| SAR/SEM | ML/IV | ✅ Complete |
8.4 Diagnostic Suite
| Test | Purpose | Status |
|---|
| VIF | Multicollinearity | ✅ Complete |
| Breusch-Pagan | Heteroskedasticity | ✅ Complete |
| Durbin-Watson | Autocorrelation | ✅ Complete |
| Jarque-Bera | Normality | ✅ Complete |
| Newey-West HAC | Robust SEs | ✅ Complete |
| RESET | Functional form | ✅ Complete |
| Hausman-Wu | Endogeneity | ✅ Complete |
| Sargan-Hansen J | Overidentification | ✅ Complete |
8.5 User Interface
Main Interface
┌─────────────────────────────────────────────────────────────────────────┐
│ MORISTAT — Advanced Econometrics Suite │
│ ┌─────────────────────────────────────────────────────────────────────┐ │
│ │ Sidebar │ Main Area │ │
│ │ ┌─────────────────────────────┐ │ ┌───────────────────────────┐ │ │
│ │ │ 1. Load Data │ │ │ Results │ Diagnostics │ │ │
│ │ │ [CSV Input Area] │ │ │ Predict │ Documentation│ │ │
│ │ │ [Parse] [Sample] [Upload] │ │ │ │ │ │
│ │ └─────────────────────────────┘ │ │ Coefficient Table │ │ │
│ │ ┌─────────────────────────────┐ │ │ Fit Statistics │ │ │
│ │ │ 2. Choose Model │ │ │ Diagnostic Tests │ │ │
│ │ │ [Model Dropdown] │ │ └───────────────────────────┘ │ │
│ │ └─────────────────────────────┘ └─────────────────────────────────┘ │
│ │ ┌─────────────────────────────┐ │
│ │ │ 3. Select Variables │ │
│ │ │ ☑ Variable1 │ │
│ │ │ ☑ Variable2 │ │
│ │ └─────────────────────────────┘ │
│ │ [▶ Run Advanced Model] │
│ └─────────────────────────────────────────────────────────────────────┘ │
└─────────────────────────────────────────────────────────────────────────┘
8.6 Export Capabilities
Export Options:
- 💾 Save All Results (TXT) — Complete report with regression, diagnostics, and predictions
- 📊 Regression Only — Just the coefficient table and fit statistics
- 🔬 Diagnostics Only — Just the diagnostic test results
- 📋 Copy All — Copy complete report to clipboard
Report Format
╔══════════════════════════════════════════════════════════╗
║ MORISTAT COMPLETE REPORT ║
║ Advanced Econometrics Suite ║
║ naglal@linux-mauritius.com ║
╚══════════════════════════════════════════════════════════╝
Generated: 2026-07-11 10:32:15
Model: Logit (Binary Choice)
Dependent Variable: default
Observations (N): 15
Parameters (k): 4
════════════════════════════════════════════════════════════
REGRESSION RESULTS
════════════════════════════════════════════════════════════
Variable Coefficient Std Error z-stat p-value Sig.
──────────────────────────────────────────────────────────────────────────────────
Intercept -2.145678 1.234567 -1.7381 0.082145 *
X1 0.456789 0.123456 3.7001 0.000215 ***
X2 -0.345678 0.098765 -3.5001 0.000465 ***
X3 0.123456 0.087654 1.4083 0.159034
Significance codes: *** p < 0.01 ** p < 0.05 * p < 0.10
════════════════════════════════════════════════════════════
END OF REPORT
════════════════════════════════════════════════════════════
8.7 Summary
What MORISTAT Offers
- Complete Econometric Suite: From OLS to advanced models
- Browser-Based: No installation, runs anywhere
- Validated: Cross-checked against established software
- Educational: Ideal for teaching and learning
- Open Source: Transparent and inspectable code
The full MORISTAT software implementation is available at:
🔗 moristat.linux-mauritius.com/console.html