Download the monthly price data for the Wells Fargo (WFC) from Finance.Yahoo.com. (for the period of Jan 1, 2000 to Feb 1, 2017) 1. Create a returns scatter-plot (the way we did in the class) and calculate the beta of the company for the entire time period. To calculate market returns use SP500 (ticker is ^GSPC in Finance.Yahoo.com). (10 points) 2. Now calculate a time-varying beta by splitting your data to 3 periods (2000-2005, 2006-2011, 2012-2017) and creating scatter-plots for each time period separately. (15 points) 3. What do you conclude from observing values for beta over time? (5 points)