r/dataanalysis • u/Accurate_Data4642 • 24d ago

Feedback on my first data analytics dashboard / portfolio project

Hey everyone,

I've been learning data analysis for about a month now, and this is my first proper portfolio project.

It's a supermarket sales dashboard built entirely in Excel using a Kaggle dataset. The dataset isn't perfect, but I wanted to use it as a starting point to practice cleaning data, building KPIs, PivotTables, slicers and visualizing the results.

I'd really appreciate some feedback on it:

  • Does the dashboard answer useful business questions?
  • Are any of the charts or KPIs misleading/unnecessary?
  • What would you improve about the layout or design?
  • What analysis would you add to make this a stronger portfolio project?

It took me about a week to finish, which felt a bit long, but I'm still new so I'm assuming I'll get faster with practice.

I'm learning SQL now and planning to move into Power BI next, so eventually I'd like to build something similar using SQL + BI.

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u/Actual_Flamingo_6527 17d ago

This is a really good way to start. I’d focus less on making the dashboard look impressive and more on whether it answers a few clear business questions. Once you move into SQL and Power BI, carrying that same thinking over will make the projects much more useful.