--- title: "Cynthia Oluchukwu (@Oluchiic) | Hashnode" description: "Cynthia Oluchukwu (@Oluchiic) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@Oluchiic" --- @Oluchiic # Cynthia Oluchukwu @Oluchiic · Joined September 2025 ### [From Raw Data to Insights: How I Used GroupBy and Aggregations in Pandas This Week](https://oluchiiic.hashnode.dev/from-raw-data-to-insights-how-i-used-groupby-and-aggregations-in-pandas-this-week?utm_source=hashnode&utm_medium=feed) This week has genuinely been one of my favourite weeks since I started my data analysis journey. For the first time, I finally feel like I’m really working with data not just tutorials or small samples, but real datasets that behave like real life: m... 4 min read · [oluchiiic.hashnode.dev](https://oluchiiic.hashnode.dev/from-raw-data-to-insights-how-i-used-groupby-and-aggregations-in-pandas-this-week?utm_source=hashnode&utm_medium=feed) [Nov 30, 2025](https://hashnode.com/posts/from-raw-data-to-insights-how-i-used-groupby-and-aggregations-in-pandas-this-week/692c7382fdc5ecfd57997608) ### [My Data Analysis Project: Exploring the Link Between GDP Per Capita and Health Expenditure Using Python](https://luchiic.hashnode.dev/my-data-analysis-project-exploring-the-link-between-gdp-per-capita-and-health-expenditure-using-python?utm_source=hashnode&utm_medium=feed) Over the past week, I worked on a data analysis project that explored whether a country’s wealth (GDP per capita) is related to how much it spends on healthcare (health expenditure per capita). This project helped me strengthen my Python, pandas, and... 3 min read · [luchiic.hashnode.dev](https://luchiic.hashnode.dev/my-data-analysis-project-exploring-the-link-between-gdp-per-capita-and-health-expenditure-using-python?utm_source=hashnode&utm_medium=feed) [Nov 22, 2025](https://hashnode.com/posts/my-data-analysis-project-exploring-the-link-between-gdp-per-capita-and-health-expenditure-using-python/6921591ff15fd527d8596353) ### [Exploring Real-World Data with Pandas: My Journey into Data Analysis](https://oluchic.hashnode.dev/exploring-real-world-data-with-pandas-my-journey-into-data-analysis?utm_source=hashnode&utm_medium=feed) This week has been one of my most exciting yet on my data learning journey. I’ve been working hands-on with Pandas, and for the first time, I used real-world datasets instead of the usual sample or toy data we often start with. It’s amazing how much ... 3 min read · [oluchic.hashnode.dev](https://oluchic.hashnode.dev/exploring-real-world-data-with-pandas-my-journey-into-data-analysis?utm_source=hashnode&utm_medium=feed) [Nov 2, 2025](https://hashnode.com/posts/exploring-real-world-data-with-pandas-my-journey-into-data-analysis/6907aecd5e5efa3617850358) ### [From Arrays to DataFrames — My Week Learning NumPy and Pandas](https://oluchiicc.hashnode.dev/from-arrays-to-dataframes-my-week-learning-numpy-and-pandas?utm_source=hashnode&utm_medium=feed) This week was both intense and exciting. We continued building on our Python foundation while diving deeper into data handling and analysis using NumPy arrays and Pandas. It was a week filled with coding, debugging, and understanding how data flows t... 2 min read · [oluchiicc.hashnode.dev](https://oluchiicc.hashnode.dev/from-arrays-to-dataframes-my-week-learning-numpy-and-pandas?utm_source=hashnode&utm_medium=feed) [Oct 26, 2025](https://hashnode.com/posts/from-arrays-to-dataframes-my-week-learning-numpy-and-pandas/68fea8e3a6acc113d2616d70) ### [Week 4 & 5 Research Journey: Deep Diving into Synthetic Data and GANs for Rare Disease Prediction](https://luchii.hashnode.dev/week-4-and-5-research-journey-deep-diving-into-synthetic-data-and-gans-for-rare-disease-prediction?utm_source=hashnode&utm_medium=feed) Introduction These past two weeks (Weeks 4 and 5) have been some of the most intellectually challenging yet rewarding stages of my research journey. My project, titled “Synthetic Data Generation for Rare Disease Prediction: Leveraging GANs to Address... 5 min read · [luchii.hashnode.dev](https://luchii.hashnode.dev/week-4-and-5-research-journey-deep-diving-into-synthetic-data-and-gans-for-rare-disease-prediction?utm_source=hashnode&utm_medium=feed) [Oct 17, 2025](https://hashnode.com/posts/week-4-and-5-research-journey-deep-diving-into-synthetic-data-and-gans-for-rare-disease-prediction/68f219c08d73a4b03e3aba28)