🌱 Week 7 Homework — Feedback

🌱 Week 7 Homework — Feedback

Student: Kamila Murzabulatova
Assignment: Solow Model with Technological & Population Growth

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❌ Overall Assessment

Result: ❌ Incorrect Submission

This submission appears to be for a different homework assignment. The code uses simulate_growth() which implements the basic Solow model without population growth (n) or technological progress (g). Week 7 homework requires simulate_growth_tech() which must include both n and g parameters and simulate three different combinations: (0,0), (0.01,0.02), and (0.02,0.03).

The current submission:

• Uses simulate_growth(alpha, s, delta, k0, T) instead of simulate_growth_tech(alpha, s, delta, n, g, k0, A0, T)
• Varies savings rate s instead of (n, g) combinations
• Uses incorrect parameters (T=50, k0=0.5 instead of T=80, k0=3.1201)
• Does not plot k_t and y_t/A_t for the three required scenarios
• Does not address the Week 7 homework questions about population and technology growth

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🔍 Task-by-Task Checklist

#	Requirement	Status	Notes
1	Separate simulate_growth_tech.m helper with correct signature	❌	Uses simulate_growth (wrong function).
2	Helper preallocates arrays and final values	⚠️	Correct for basic model, but wrong function.
3	Law of motion divides by (1+n)(1+g)	❌	Basic Solow law of motion only.
4	Technology path updates with (1+g)	❌	No technology variable.
5	Main script sets required parameters (α, δ, s, T=80, k0, A0)	❌	Uses T=50, k0=0.5, no A0.
6	Scenario matrix includes (0,0), (0.01,0.02), (0.02,0.03)	❌	Varies s instead of (n, g).
7	Reuses simulation outputs for later steps	⚠️	Stores results but for wrong model.
8	Plot k_t for the three scenarios	❌	Plots capital but for wrong scenarios.
9	Add steady-state reference lines on k_t plot	❌	Missing.
10	Plot y_t/A_t for the three scenarios	❌	Plots y_t but not y_t/A_t.
11	Add steady-state reference lines on y_t/A_t plot	❌	Missing.
12	Save figures to Figures/ (PNG/PDF)	❌	Figures not saved.
13	Provide steady-state summary (table or print)	❌	Missing.
14	Interpretation answers both homework questions	❌	Interpretation incomplete and addresses wrong questions.
15	Code hygiene (comments, no cd, folder guard)	⚠️	Basic structure present.

Score: 0/15 tasks correct for Week 7 requirements → ❌

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📈 Evidence & Highlights

30:31:docs/week7/Homework submissions/Kamila.M_Week7 Kamila Murzabulatova/week7_simulation_2243431.m % Call your function [k, y, c] = simulate_growth(alpha, s, delta, k0, T);

This is the basic Solow model function, not the Week 7 required function with technology and population growth.

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💡 Suggestions for Improvement

1. Use the correct function: Replace simulate_growth() with simulate_growth_tech() which must accept parameters (alpha, s, delta, n, g, k0, A0, T) and return [k, y, c, A].

2. Implement the correct helper function: Create simulate_growth_tech.m that:
   • Updates technology: A(t+1) = (1+g) * A(t)
   • Uses law of motion: k(t+1) = [s*k(t)^alpha + (1-delta)*k(t)] / [(1+n)*(1+g)]
   • Returns capital per effective worker, output, consumption, and technology paths

3. Use correct parameters: Set T=80, k0=3.1201, A0=1 as specified in the homework.

4. Run three scenarios: Simulate for (n, g) = (0, 0), (0.01, 0.02), and (0.02, 0.03) instead of varying savings rate.

5. Plot required outputs: Create plots for:
   • k_t (capital per effective worker) for all three scenarios
   • y_t/A_t (output per effective worker) for all three scenarios
   • Include steady-state reference lines on both plots
6. Add interpretation: Comment on how n and g affect steady-state levels and convergence speed.

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🧾 Summary

This submission appears to be for an earlier week’s homework (basic Solow model) rather than Week 7 (Solow with technological change and population growth). Please resubmit using the correct function simulate_growth_tech() and following the Week 7 homework specifications.

Grade: ❌ (Incorrect submission - wrong homework assignment)