🌍 Week 11 Homework — Feedback

Student: Chiara Tombolini Assignment: VAR Estimation and Identification

✅ Overall Assessment

Result: ✅ Pass

Good submission. You correctly implemented the 3-variable VAR for the homework section (at the bottom of the file). The code correctly estimates the model and plots the IRFs.

🔍 Task-by-Task Check

Task Description Status Notes
1.1 Data Loading & Cleanup ✅ Correctly loads and transforms data
1.2 Data Transformation ✅ Correctly computes annualized growth rates
1.3 Construct Data Matrices ✅ Correct setup of VAR matrices
1.4 OLS Estimation ✅ Correct matrix OLS estimation
1.5 Extract A1 Matrix ✅ Correct extraction of A1
1.6 Residuals & Sigma ✅ Correct covariance calculation
1.7 Identification (Cholesky) ✅ Correct Cholesky decomposition
1.8 Compute IRFs ✅ Correct loop for IRF generation
1.9 Plot IRFs ✅ Generates comprehensive 3x3 grid
1.10 Save Figures ✅ Saves figures correctly

📈 Technical Implementation

  • Homework Section: The specific homework task (lines 152+) is implemented correctly with the 3 variables.
  • Challenge Section: The bivariate VAR challenge is also completed correctly.

💬 Style & Clarity

  • Structure: The file contains both the class challenge and the homework, which is fine, but keeping them separate might be cleaner.
  • Cleanliness: Code is readable.

📊 Visual Output Assessment

  • Plots: Clear 3x3 grid for the 3-variable VAR.
  • Labels: Correctly labeled.

✅ Suggestions for Improvement

  1. Organization: You might want to submit only the relevant homework code or separate the files to avoid confusion, but the work itself is correct.

🎯 Summary

Good work. The submission correctly answers the homework prompt.

Grade Level: ✅ Pass (10/10 tasks correct)