Hello, could you please explain this question and how should I solve it: Estimate the Security Characteristic Line (SCL) for each of your stocks and

Hello, could you please explain this question and how should I solve it: Estimate the Security Characteristic Line (SCL) for each of your stocks and the equal weighted portfolio, based on the 'Market Model', using excess returns (discrete returns less the risk free rate), using Excel regression analysis functions. Show your results graphically. From your results, compute the Beta and the Jensen's Alpha of each stock and the portfolio.