Research and Report Consultancy

Why Simpler Models Outperform Overfitted Ones

Why-simpler-models-outperform-overfitted-ones

In data analysis and research, complexity is often mistaken for sophistication. Many assume that the more variables or equations a model has, the stronger it becomes. However, the reality is quite the opposite — simpler models often perform better than overly complex, overfitted ones. Let’s explore why simplicity often wins, both statistically and practically. What … Read more

The Misuse of R² in Regression Analysis

The Misuse of R² in Regression Analysis

What R² Actually Measures Why High R² Is Often Misleading Overfitting & Inflated R² Model Misspecification & Nonlinearity Sampling Issues & Range Effects Better Metrics & Validation Techniques Adjusted R²: A Penalized Alternative Cross-Validation & Leave-One-Out R² Residual Diagnostics & Model Assumptions Practical Tips for Researchers R² is not magic. It’s a limited metric, useful … Read more