I’m Rolanda, a passionate data analyst with a love for turning raw data into actionable insights. Whether it’s wrangling messy datasets, creating compelling visualizations, or uncovering hidden patterns, I thrive on solving real-world problems using data.
In this Machine Learning project is training my Logistic Regression Model to predict the likelihood of loan default.
App Medium
This Power BI project assesses the churn rate for a telecom company, the factors affecting churn, who was churning and avenues to reduce churn.
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This Power BI project delves into sales data from the UK train trabsit system to assess consumer behavior and evaluate operational efficiency.
GitHub MediumIn this project, I use SQL to clean and perform exploratory data analysis on company layoff data.
GitHub Medium
In this project, I use SQL to sift through an intricate database to find the perpetrators of a crime.
GitHub Medium
This SQL projects depicts what goes on at the backend of a simple diary app when various actions are taken by developers and users.
GitHub Medium
In this Power BI project, I delve into Atlas Lab's HR database and create an interactive and reusable dashboard to help HR better understand staff and assess employee attrition.
GitHub Medium
This excel project delves into the sales data of a coffee chain in New York city.
GitHub Medium
This Excel and Power BI project assesses the performance of various educative subjects and explores opportunities for growth.
GitHub MediumFrom Data Digging and Transformation to Exploratory data analysis and Visualizations, I use these relevant tools to complete the task at hand.
I love Excel for it's versality,quick insights and easy data cleaning. I turn to Excel for quick exploratory data analysis, creating pivot tables, and generating simple visualizations. Its data cleaning capabilities, such as removing duplicates, handling missing values, and transforming data, are invaluable. I enjoy Power BI for it's interactive dashboards,dynamic visualizations and data modeling. I love Tableau for it's beautiful visualizations, emphasis on story telling and it's vibrant community and resources. SQL is great for data retrieval,joins and aggregations and scalability. Python offers me a gallery of libraries and enables me to build custom scripts and automate repetitive tasks. Python is my all-purpose tool.