Intern Documents Four-Week Data Analytics Journey From Excel to SQL and Python

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A data analyst intern at Logic Stack completed a four-week program that progressively advanced from Excel-based data cleaning and Power BI dashboards to Python and SQL-driven analytics. During weeks three and four, the intern used Pandas, NumPy, and Jupyter Notebook to perform exploratory data analysis on a supply chain dataset, then visualized the results in Power BI. The final week introduced SQL through SQLite, where the intern analyzed customer funnel performance, revenue trends, and conversion metrics before connecting the data to Power BI dashboards. Across all four weeks, the intern built end-to-end analytics workflows spanning spreadsheet tools, programming, database querying, and business intelligence visualization. The intern noted that independent problem-solving — including debugging environments and researching documentation — proved to be among the most valuable skills gained during the program.

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