My time to try and add a bit of value. In this video, I show how you can find the correlation between different assets. It shows how to do scatter matrix plots, linear regression, finding the R-values, and what you should be looking for. 

I use Tesla, Nio, and Xpeng as examples. Hope it's useful! 

Stinus
 

https://youtu.be/xSc1EIrl3P4