Investing and stock market subs

By saying 1 sigma, they are basically saying tgat are 68% confident in the results. As you increase the sigma, your confidence in the results increases. Here is a site that goes into more in depth explanation: https://news.mit.edu/2012/explained-sigma-0209#

If you want a headless setup, you should check out dietpi. It works really well and makes it easy to setup *arr apps