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Based on my own experience, I think this roadmap will answer all the questions of how to become a data analyst from zero, which technologies and programming languages are better to know, what kind of soft skills do we need, how do I start my professional career in this field.
This is an analysis made on a superstore to understand why they had been making losses over a four year period, yet it had accounts on a substantial amount of sales over the same year period.
A cost analysis dataset of region-wise different IT departments was used for this project. I used excel and powerBI query tools to analyze and build the relational model. After that used different visualization tools to show different budgets and forecasts comparisons.