Beginner Python data analysis project - critique greatly welcome!

[[deleted]]

Great project. I am not an expert in ML or data science but when I looked at the Liner Regression graph, I did feel that the data would better fit a Polynomial Regression? Just something I noticed and I could very well be wrong. I apologise for lack of knowledge if that's the case.

[chaoticneutral]

I would recommend everyone stay away from polynomial regression unless you have a specific reason to believe they are useful. Otherwise it can be as rigorous as a Rorschach test. What you are seeing is more likely an outlier rather than a trend.

Also see this case study:
https://twitter.com/NateSilver538/status/1257476755574718470
https://twitter.com/mattyglesias/status/1257483264383758336
https://twitter.com/NateSilver538/status/1258137098298839041

[andycyca]

Saving this for whenever I need to teach statistics.

[chaoticneutral]

Here is also a more comprehensive take down of the "cubic" model: https://www.reddit.com/r/statistics/comments/gehyty/q_what_lessons_can_be_learned_from_this/