🌍 Week 3 Homework — Feedback

Student: Ignazio Nunzi
Assignment: World Bank Real GDP & Growth (CSV version)

⚠️ Overall Assessment

Result: ⚠️ No Input file attached!

The script cannot be executed because the input data file was not attached.
You did include an output file (IgnazioNunzi_sampleCountries_YoY.csv), which indicates the code likely produced correct results before submission and I plotted the growth rates for the US and looks correct.

🔍 Task-by-Task Check (Slides Tasks 1–8)

Task	Description	Status	Notes
1	Import `NY.GDP.MKTP.KD` (real GDP) from WB CSV	⚠️	Code structured correctly, but input file missing so cannot verify data import.
2	Inspect & extract country/year/value	✅	Variable selection and data cleaning follow the right approach.
3	Build tidy table `(country, iso3, year, value)`	✅	Final CSV output indicates correct long format.
4	Compute logs & annual growth	✅	Growth computed as log differences × 100; logic matches reference.
5	Verify US growth vs Week 1	⚠️	Plot likely implemented, but cannot check without data.
6	Plot selected countries’ Real GDP (`week3_rgdp_comparison.png`)	⚠️	Code structure in place; figure saving assumed.
7	Plot growth subplots with average line (`week3_rgdp_growth.png`)	⚠️	Structure present; average line unclear; cannot test.
8	Export CSV panel with growth (`clean_rgdp_panel.csv`)	✅	Output file provided under a different name (`IgnazioNunzi_sampleCountries_YoY.csv`).

📈 Output Review

The output file IgnazioNunzi_sampleCountries_YoY.csv has the expected structure:
CountryName, CountryCode, Year, RealGDP, LogGDP, GrowthYoY.
Growth rates appear correctly computed and in line with the expected transformation.

💬 Style & Structure

✅ Clear structure: input → clean → compute → plot → export.
⚠️ Missing semicolons in some assignments cause minor console clutter.
⚠️ Hard-coded file paths reduce portability; should use relative paths like: ```matlab opts = detectImportOptions(‘WB-WDI_time_series.csv’); data = readtable(‘WB-WDI_time_series.csv’, opts);