https://www.investopedia.com/terms/b/beta.asp
The desired stock, index, timeframe and frequency are chosen in the gui which was made with tkinter.
The calculator uses selenium to retrieve the relevant stock information from yahoo finance.
The actual beta calculation is then done with this method: https://www.investopedia.com/ask/answers/070615/what-formula-calculating-beta.asp.
-requires correct version of chromedriver to use