Doniyor Khudoykulov · Data Analyst · Samarkand
I work from raw tables to a clear recommendation: checking the data, finding the pattern, and explaining what a business can do with it.
Selected work
The methods vary. The aim stays the same: reach a conclusion a reader can act on, and show where the evidence stops.
Python · forecasting
Could Olist show an earlier delivery date without missing it more often?
A quantile model shortened the average promised date by about three days while reducing late deliveries on the held-out test period.
SQL · marketplace operations
Would removing the worst sellers meaningfully improve customer reviews?
The weakest tier was small. A larger group of sellers needing attention accounted for far more low ratings, making coaching the stronger first move.
Power BI · supply chain
Which products, regions, and shipping choices actually supported profit?
A Power BI report separated revenue from margin and showed why faster shipping did not mean more reliable delivery.
Excel · financial analysis
Did BYD’s 2024 revenue growth weaken its financial position?
Nine ratios showed improvement in profitability, liquidity, and solvency. Inventory was the measure to keep watching.
About
My background is in business and management, and my technical work spans SQL, Python, Power BI, and Excel. I prefer questions where the result changes a decision: which sellers to support, what date to promise, or which growth is actually profitable.
I study Data Science at School 21 and Management at Silk Road International University of Tourism and Cultural Heritage. Both programs are in progress.
I co-founded AdvoAI, a live MVP for finding answers in Uzbek law. I designed its retrieval pipeline, including text chunking, hybrid search, and reranking. The first prototype placed eighth of more than 30 teams in the entrepreneurship track of the National AI Hackathon.
SQL · Python · pandas · Power BI · Power Query · DAX · Excel · Git
Contact
I'm based in Samarkand, Uzbekistan. You can reach me by email or review the source work and CV.