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Has anyone else begun to resent data science?
Thought this was interesting. Across 160 teams of researchers, just about all failed to make good life outcome predictions on things like GPA, evictions, layoffs, and others. Data followed 4.5k families across 15 years, with 13k features (varied over time). Haven't looked at it directly yet, but will be turning the docs and data inside out... In the meantime, authors claim this as showing the limits of ML. Oh, and it's published in PNAS, so you know there's some big publication energy there.
https://www.pnas.org/content/117/15/8398
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Eh, the last time I saw a client implementing tableau was... a long while ago. PowerBI is booming, but I've also seen a bunch of clients slide into Qlik, Sisense, and Domo. Clearly, you aren't going to learn them all to be employable. The purpose is to show that you can apply the skills in one to a different tool.
For that, PowerBI has a lot more out of the gate for any client already on Azure, so it builds itself a base. Qlik and Domo I've done work on in AWS and GCP environments, though Qlik I've also done on Azure as well.
Learn a tool. Learn how to incorporate different data sources and formats (CSV, YAML, JSON), and learn how to read streaming data. Learn how to blend data, use reference data, and learn what visualization helps someone pinpoint a problem.
Personally, tableau was super easy. PowerBI was way more of a challenge and less intuitive to learn. For that reason, I'd rather learn PowerBI because it was way more of a mind-flip to get good with. Please note, I dont make any dashboards anymore, but I do recommend and review other people's work. The best client facing dashboards my teams are producing are either PowerBI or a really client specific tool.
I think Power BI has the lowest skill floor, Tableu has a higher skill floor but also a higher skill ceiling.
You also need to master statistical analysis, algorithmic thinking, and data modeling regardless of the tool.
A lot of my experience has been standing up analytics/B capabilities or teams where none exist. I have done that with a variety of tools. In my experience, people take longer to develop the ability to be a fully independent analytics team with fully automated dashboards with Tableau than with Power BI. But if you want some truly fancy dashboards and are willing to develop the skills for it, I think you can accomplish more with Tableau.
PBI
You can also learn more of the principles behind data visualization and data modeling on Udemy or Coursera
Microsoft has a guided pbi course with a certification test at the end
PBI